A computer-generated image of the suicide attacker who killed five Israeli tourists and a bus driver in Bulgaria has been released by police.

The man who blew himself up on a bus full of Israeli tourists, killing himself and six other people had tried to rent a car but was turned down because his ID appeared suspicious, a Bulgarian prosecutor said today.

He looked like any other impatient tourist checking the board at airport arrivals: a lanky, long-haired man in a baseball cap with his hands in the pockets of his plaid Bermuda shorts, a bulky backpack hanging from his shoulders.

A bomb exploded on a bus carrying Israeli youths in a Bulgarian resort today, killing at least six people and wounding 32, officials said.