A police officer who caused "chaos and anxiety" by making a hoax 999 call to his own force has been jailed for seven years.
PC Amar Tasaddiq Hussain sent West Midlands Police into "overdrive" after phoning through an anonymous warning that a terrorist with links to Syria was planning to kidnap a Muslim policeman.
Stafford Crown Court heard that Hussain and two other men from Birmingham hoped the 999 call would discredit an official at an Islamic community group they were members of.
Jurors were told that the conspiracy prompted police commanders to put a hostage negotiator on stand-by and order substantial inquiries into the supposed terror plot.
During the 24-hour alert, which only ended with the arrest of an innocent man, armed police units were deployed to the home of an off-duty officer who did not answer an emergency roll-call.
Jailing Hussain, Judge Michael Chambers QC criticised the 29-year-old for showing no remorse and pleading not guilty in the face of overwhelming evidence.
Hussain, unemployed Adil Bashir, 26, and 31-year-old tutor Muhammad Ali Sheikh, were all convicted of two counts of conspiracy to pervert the course of justice.
Describing Hussain as "the last person who ought to be serving" with West Midlands Police, the judge said the officer had been the instigator of the offences on December 8, 2014.
He told Hussain - who was suspended on full pay after his arrest and faces dismissal at a hearing next month - that he had caused "chaos and anxiety" to his colleagues and "enormous" difficulties for his force.
Judge Chambers said: "It's quite clear you abused your knowledge of the 999 system and police procedures for your own ends.
"It is also clear you were prepared to say any lie to avoid your guilt despite what was overwhelming evidence."
Bashir and Sheikh were both given three-year jail sentences for their parts in the conspiracy.
Addressing all three conspirators, the judge added: "The three of you plotted to falsely incriminate an innocent man with being involved in serious criminal offences.
"All three of you were members of the West Midlands branch of an international group which is an entirely peaceful and law-abiding organisation.
"You, Hussain, had been thwarted in your ambition to become its head of security.
"The effect of the 999 call was quite devastating both for (the innocent man arrested) and the police.
"At that time the threat level in the United Kingdom for terrorism matters was severe. Sadly we live in an age when such threats and plots are credible."
The innocent party named in the "malicious" tip-off was questioned over two days on suspicion of involvement in terrorism, causing him immense personal anxiety, the judge added.
Assistant Chief Constable Marcus Beale said: "Today's sentencing reflects the severity of what Hussain did.
"He not only let down West Midlands Police, he has also let down the peaceful, non-political organisation that he was part of.
"The impact of the threat had an unprecedented effect on officers and staff and in turn on their loved ones.
"Never before have we had to instruct officers and staff to call in after their tour of duty to let us know they had returned home safely.
"There is absolutely no place in policing for those who abuse the trust placed in us by the public."
A UK citizen has been jailed for 40 years in the United States after plotting to carry out a suicide bomb attack at Heathrow Airport.
Minh Quang Pham, who was born in Vietnam, admitted three counts of terrorist activity based on his support for the group al Qaeda in the Arabian Peninsula (AQAP).
Prosecutors said he was directed by al Qaeda to detonate a bomb in Heathrow's arrivals area.
Pham denied ever intending to carry out his plot and no attack ever occurred.
The 33-year-old was said to have worked as a graphic artist on al Qaeda's magazine, Inspire.
The plot was said to involve setting off a bomb in Heathrow arrivals
Prosecutors said he left a pregnant wife in Britain to spend several months training with the terror group in Yemen.
He was detained at Heathrow on his return in 2011, with police finding items including a live round of ammunition.
Pham pleaded guilty to one count of providing material support to AQAP, one count of conspiring to receive military training from AQAP, and one count of possessing and using a machine gun in furtherance of crimes of violence.
During a hearing in New York he admitted making a "terrible mistake" that he regretted.
In a letter to the judge he renounced all acts of terrorism and extremist ideology.
But District Judge Alison Nathan said she believed the US government's contention that Pham planned to carry out "a horrific suicide bombing" at Heathrow.
She said he deserved an "exceptionally severe sentence" after becoming a trusted asset for the terrorist group.
Scotland Yard said it provided key evidence that helped put Pham, who is also known as Amin, in jail.
A fraudster who billed himself as "da real don" - but in fact made his money from a phone scam targeting elderly people - has been jailed for three years.
Jahangir Khan boasted in rap lyrics about his lavish criminal lifestyle but failed to mention conning pensioners out of their savings.
The 23-year-old and three accomplices would pose as police officers and bank officials to con people across the Midlands, Hertfordshire, Wiltshire and Northamptonshire.
In early 2014 the group made in excess of 1,300 'phishing' calls to landline numbers.
They raided 84 people's bank accounts after persuading victims to hand over their details - the oldest victim was a 92-year-old woman.
West Midlands Police have now released a transcript of rap lyrics found on Khan's phone where he boasts of being the "real don" and "da underground's finest".
The lyrics also allude to Rolex watches, speeding around in high-powered cars, and his claimed popularity with the "honeys".
Jahangir Khan and Arafa Begum
Detective Constable Dan Chappelow, said: "Khan clearly saw himself as a respected kingpin of the criminal world … in his mind he was 'da underground's finest' who drew respect from men and a magnet for adoring women.
"The truth is that Khan is a coward who spent his time phoning elderly people and tricking them into parting with bank cards and PIN numbers with scare stories that their accounts had been compromised.
"His crimes are a million miles away from the lifestyle depicted in his rap."
Detectives from the force's Economic Crime Unit arrested the 23-year-old from Perry Barr, Birmingham, and found photos of him showing off designer watches, jewellery and clothes − paid for with cash from victims' bank accounts.
CCTV showed Khan taking victims' money from a cash point and using a stolen card at a convenience store.
Mohammed Miah and Motahir Rahman
Khan's accomplice Mohammed Miah, 21, from London, was jailed for three years and two months.
Arafa Begum, from Nechells, Birmingham, was sentenced to eight months, suspended for 21 months, and ordered to do 150 hours of community service.
Motahir Rahman, 24, from London, was sentenced to 10 months, suspended for 21 months, and also ordered to do 150 hours of community service.