A federal grand jury has returned a four-count indictment against Omer Fadhel Saleh Mohammed, 31, of Rochester, New York.

If found guilty, he faces up to 10 years in jail for making false bomb threats.

According to the indictment, on 24 September 2012 Mohammed made three phone calls to 911, telling the operator his acquaintances were terrorists who were going to blow up Kodak.

He also stands accused of making a fourth call, on 24 January 2013, claiming that an acquaintance had hidden explosives at a location in Rochester.

In a statement, FBI investigators said: ‘The 911 calls resulted in emergency responses by the Rochester Police and Fire Departments and by Kodak security personnel, but searches failed to turn up any bombs or evidence that someone had attempted to plant a bomb at any of Kodak’s facilities.’

The defendant was arrested on 4 February.