A judge has denied requests by lawyers for Boston Marathon bombing suspect Dzhokhar Tsarnaev to move his trial out of state and to delay its start.

That means jury selection will begin on Monday in Boston federal court.

Defence lawyers had said it would be impossible to find an impartial jury in Massachusetts given the massive amounts of publicity the case has received.

Tsarnaev has pleaded not guilty to 30 federal charges connected to the April 2013 explosions at the finish line that killed three and injured more than 260.