The attackers wired the place with explosives and detonated them when others arrived to try and free the policemen.
The attacker detonated his explosives outside, killing himself but causing no other casualties.
The attacker detonated explosives in his turban as the mayor made an address at the city hall, police said.
The first attacker detonated a car bomb, and a second militant blew himself up in the house of the city's Frontier Corps chief.
The attacker then detonated his bomb, spraying glass, metal and body parts over the entrance.
The attacker, or attackers, detonated it as three Humvees were driving along one side of the road.
The attacker managed to sneak by security as he was allowed into the base and detonated himself.
The attackers had buried a 200-pound aerial bomb attached to two 155-millimeter artillery shells and detonated the charge by remote control.
U.S. intelligence and military officials said the attacker detonated his charge shortly before being searched.
The attackers first detonated a roadside bomb next to an armored civilian Dan No. 189 bus.