For Belgian authorities, he's "Big Guy," a key actor in an extremist plot foiled just in time that was run remotely by the ringleader of last fall's gun and bomb attacks in Paris.

But former security guard Mourane El Bali told a Brussels court Thursday that if he's guilty of anything, it's of talking big.

According to the court record, the 26-year-old was heard on a wiretapped phone announcing in code that he had managed to buy a Kalashnikov-style assault rifle for 1,200 euros (about $1,360).

"I was talking bull more than anything else," El Bali told the judge.

He is on trial with six other men accused of belonging to a group linked to Islamic militants that was broken up in the Belgian city of Verviers in January 2015.