The Kerem Shalom crossing was closed Tuesday after a Palestinian rocket was fired at Ashkelon Monday night, the first in the three-month ceasefire which ended the Israeli operation in Gaza. Most of the goods crossing into the Gaza Strip from Israel goes through that crossing. The volume was substantially increased and diversified after the ceasefire. There were no casualties from the rocket whic exploded south of the town of Ashkelon – only damage to a road. Some witnesses reported two explosions.