A policeman who sparked a major terror alert by making a hoax 999 call to his own force has been warned to expect a "substantial" prison term.
Pc Amar Tasaddiq Hussain, 29, appeared unmoved in the dock as a jury convicted him of two counts of conspiracy to pervert the course of justice.
A three-week trial at Stafford Crown Court was told Pc Hussain's actions prompted West Midlands Police to take unprecedented security measures to combat a supposed plot to kidnap a Muslim officer.
The trial also ended with the conviction of two men from Birmingham - Adil Bashir, 26, and 31-year-old Muhammad Ali Sheikh - on the same charges.
Adjourning sentence until later this month, the Recorder of Stafford, Judge Michael Chambers QC, told all three defendants: "Clearly, substantial sentences of imprisonment are inevitably going to follow."
Jurors, who returned unanimous guilty verdicts after deliberating over three days, were told Pc Hussain hoped his bogus tip-off would discredit an official within an Islamic community group.
The malicious 999 call in December 2014 - passing on details of the "kidnap" plot - followed two other anonymous calls alleging that a sham marriage was taking place in Birmingham.
At the start of the trial, prosecutor Simon Davis claimed the call alleging a terrorist plot was an attempt by Pc Hussain to discredit a fellow member of Dawat-e-Islami, a faith group which held peaceful gatherings in the West Midlands.
The bogus allegation that a kidnapping was imminent led to a man being arrested by counter-terrorism police at a tyre business in Walsall.
But it soon became obvious to police that the claims made against the innocent party were malicious.
All three defendants were remanded in custody until sentencing on May 27.
Addressing the court after the guilty verdicts, Judge Chambers said: "I am going to direct that pre-sentence reports are prepared.
"These were extremely serious offences and in your case, Hussain, represent a vast breach of trust."