Israeli tanks crossed the
border into the Gaza Strip.
Israeli tanks backed by helicopters have crossed the border with the Gaza Strip, triggering clashes in Gaza City.
Witnesses told AFP that the military forces entered Gaza City early Thursday with Palestinian fighters exchanging fire with them.
The military forces however left the strip after the fighters fired antitank rockets at them.
No casualties have been reported in the attack.
There was no comment by the Israeli military on the incident.