JERUSALEM (Reuters) - Palestinian rockets fired from the Gaza Strip hit the southern Israeli town of Sderot on Sunday, the first such attack since a unilateral Israeli ceasefire went into effect, Channel 10 television reported.

Seconds after Israel Radio announced that a rocket alarm had sounded in Sderot, a Channel 10 reporter in the town said he heard two explosions. Channel Two television said six rockets had been fired at southern Israel.

Earlier, Israeli forces and Palestinian militants waged a brief gun battle in the Gaza Strip, the Israeli military and Hamas sources said. Hamas has rejected the ceasefire, saying it would continue fighting as long as Israeli troops remained in the territory.