A police officer and an eyewitness say suicide bombers have attacked a police station near the presidential palace in the heart of the Afghan capital, killing two police officers.

A police officer said one suicide bomber also had been killed in the attack in Kabul that started early Saturday afternoon. The officer requested anonymity as he was not authorized to brief the media.

A 32-year-old eyewitness, Mohammed Honayon, told The Associated Press the attackers were wearing Afghan army uniforms and opened fire as they tried to enter the police station.

A gun battle between insurgents and security forces was still going on for control of the station.