A police officer who sparked a nationwide terror alert by making a hoax 999 call to his own force has had his "unduly lenient" jail term increased.

Amar Tasaddiq Hussain - who is no longer a police officer- is to spend an extra two years behind bars after phoning West Midlands Police with an anonymous warning that a terrorist with links to Syria was planning to kidnap a Muslim policeman.

At his trial, Hussain, along with Adil Bashir and Mohammed Ali Sheikh, was found guilty of two counts of conspiracy to pervert the course of justice.

The court heard that the group hoped the December 2014 phone call would discredit an official at an Islamic community group they were members of.

Jurors heard the conspiracy resulted in an innocent man being arrested, and armed police units being deployed to the home of an off-duty officer who did not answer the emergency roll call.

Police commanders had also put a hostage negotiator on standby and ordered substantial inquiries into the supposed terror plot.

Hussain, 30, was originally given a seven-year jail term following the trial at Stafford Crown Court, while Bashir, 26, and Sheikh, 31, were jailed for five years each.

All three will see their jail terms increase by a two years.

Attorney General Jeremy Wright QC referred all three defendants' sentences to the Court of Appeal after he finding them to be unduly lenient.

"This hoax sparked a huge police response, coming at a time when the national terrorism threat level was severe," said Mr Wright, after the Court of Appeal hearing.

"It had a negative effect on all West Midlands employees and their families, causing a great deal of fear and anxiety.

"I'm pleased the court has agreed this trio should spend longer in prison for their actions."