MIAMI - Two Canadian and one U.S. media outlet have made good on plans to fight a Pentagon decision to ban their reporters from hearings involving Omar Khadr.

The Miami Herald is reporting on its website that the Toronto Star, Canwest and the Herald have appealed the decision to the Pentagon.

They contend it was illegal and unconstitutional.

Earlier this month reporters from those three media outlets and the Globe and Mail were told they could no longer attend pre-trial hearings at Guantanamo Bay involving Khadr.

They were told they breached a ban identifying a witness, even though the man's identity was widely known.

Khadr is accused of throwing a grenade in Afghanistan in 2002 that killed a U.S. soldier.

The Pentagon order bans the four reporters who broke the ban from covering the hearings, but it says the media outlets could continue to cover the hearings using other reporters.