Israeli forces have killed a Palestinian and injured three others in an air raid on Gaza.
Witnesses said the attack, which came amid UN and US calls for calm, took place near the northern town of Jabalya when a warplane fired three missiles at militants preparing to launch rockets on Israel.
The Al-Aqsa Martyrs Brigades identified the dead man as the local commander, Ali Hijazi, who was 22.
It did not comment on a doctor's claims that two of the injured, both of them seriously hurt, were were also members of the group. A civilian was also injured.
An Israeli defence forces spokesman confirmed the attack, saying it was launched after two rockets were fired on southern Israel without causing any casualties.
Yesterday, militants fired four rockets at Israel.
Tension has been rising in and around Gaza after Hamas said it would not extend the six-month truce with Israel, which took effect on 19 June last, and warned they would respond to any attack.
Meanwhile, a boat carrying international activists delivering medical aid docked in Gaza today after sailing from Cyprus despite an Israeli naval blockade.
It was the fifth voyage by the US-based 'Free Gaza' movement since it launched shuttles from Cyprus last August.
Israel patrols the coastal waters around Gaza, but has not obstructed Free Gaza activists from sailing there.
