GAZA CITY (AFP) - An Israeli air strike on a car in the Gaza Strip killed two Palestinians Friday, medics said, hours after a bomb exploded near troops manning Israel's security fence.

The violence comes a day after Israel accused two men it said belong to Hamas of kidnapping three Israeli teenagers in the occupied West Bank a fortnight ago.

Israel responded to the abduction by staging a vast crackdown on the West Bank network of Hamas, which governed Gaza until a recent Palestinian unity deal was struck, and has arrested hundreds of its Islamist foe's members.

"The remains of two martyrs killed in an Israeli raid on a car were taken to the Al-Shifa hospital in Gaza," health services spokesman Ashraf al-Qudra told AFP.

He named them as Osama al-Hassumi, 29, and Mohammed Fasih, 24.

The Israeli military confirmed the strike, saying the pair were involved in rocket attacks on Israel over the past week.

Late Friday, Palestinian militants in Gaza fired five rockets at Israel, without causing casualties or damage, a military spokeswoman said.

Two projectiles were destroyed in flight by the "Iron Dome" anti-missile defence system, she added.

Earlier Friday, five Palestinians in Gaza were wounded by Israeli tank fire in response to the detonation of the border bomb.

Qudra said they were hurt when the tanks targeted "two mosque minarets" east of Khan Yunis in southern Gaza.

An 11-year-old boy was seriously wounded, he said.

Palestinian medics said the air raids struck near the home of Ismail Haniya, former Hamas premier who stepped down on June 2 when Gaza and the West Bank set up a unity government.

Al Ray contributed to this report.