Turkish police on Thursday launched early morning raids against suspected members of an ultra-leftist group in Istanbul, after two deadly shoot outs blamed on the militants that sent a wave of fear through the city.

Turkish police on Thursday launched early morning raids against suspected members of an ultra-leftist group in Istanbul, after two deadly shoot outs blamed on the militants that sent a wave of fear through the city.

At least 10 people were arrested in the raids in the Okmeydani district of Istanbul as dozens of police deployed in armored vehicles in the area, Turkish media said.

The raids came two days after a prosecutor was killed in Istanbul in a hostage taking blamed on the far-left Revolutionary People's Liberation Party-Front (DHKP-C).

On Wednesday, a militant tried to storm the police headquarters in Istanbul. Police opened fire in response, killing the female assailant who was armed with grenades and guns.

Turkish media named the dead woman as Elif Sultan Kalsen, 28, saying she was a known member of the DHKP-C.

Initial reports said she had a male accomplice who escaped and was then arrested. However the CNN-Turk channel said Monday that the person was a passer-by who had been wounded in the crossfire.

The DHKP-C has claimed a string of attacks in Turkey in recent months, including an attempted grenade attack in January on police guarding the Dolmabahce palace in Istanbul that caused no serious casualties.

It also claimed a suicide attack in Istanbul later that month but, amid a bizarre sequence of events then withdrew the claim, saying it had made a mistake.