SARAJEVO, Bosnia-Herzegovina (AP) _ Bullets fired from a Serb position Friday slightly wounded a man on a streetcar _ the first attack on civilians in the Bosnian capital since the latest cease-fire began.

Bosnian police said a burst of small arms fire hit a streetcar on Sniper Alley at 11 a.m.

It was the first sniping in residential Sarajevo since an Oct. 12 truce took effect. A few other people, mostly soldiers, have been wounded by stray small arms fire on and near the front lines.

Stjepan Trlin, 51, was slightly wounded in the arm when the bullet pierced his thick coat and a calculator.

``At one moment I just heard `Boom' and I felt a punch into my chest. I thought: Am I going to be killed now when the war is over?,'' Trlin said at his apartment.

``The most important thing is that I survived. I will be celebrating this day as my second birthday,'' he said, raising a glass of cognac with shaking hands.

The United Nations had no immediate comment on the shooting.

The incident underscored the heightened tensions triggered by demonstrations organized by Bosnian Serbs to protest the peace agreement reached in Dayton, Ohio, which gives most of the Serb-held Sarajevo suburbs to the Muslim-Croat federation.

Serbs have expressed fears that the Bosnian government might retaliate against them for 3 1/2 years of bombing and shelling during the Serbs' siege of the city.

U.N. officials recently said they expected the Serb protests to provoke violent incidents, including snipings.

The streetcar service, interrupted frequently during the war, remained open after Friday's sniping.