Turkish officials say seven police officers have been wounded in a shootout during a raid on members of a far-left militant group in Istanbul.

Officials say militants threw explosive devices at police Monday as they moved in on an apartment block.  Two civilians, including a cameraman, were struck by stray bullets.  Thick smoke filled the air as helicopters flew over the area.

Police say they detained at least 10 suspects during overnight raids in more than 60 areas.

The raids come days before May Day, which parliament reinstated as a public holiday last week.

The date had been removed from Turkey's calendar of national holidays after a military coup in 1980. The coup came at a time of severe political tensions and street violence between left- and right-wing activists.

Some information for this report was provided by AP and Reuters.