(Xinhua) -- Palestinian militants fired a mortar shell from the northern Gaza Strip at a border crossing on Monday afternoon, a spokeswoman of Israeli Defense Forces (IDF) told Xinhua. The spokeswoman said no one was hurt and no damage was caused by the attack on the Karni cargo crossing. But he did not say how Israel would respond to the latest breach of the Gaza truce.
The attack came one day after Israel reopened some border crossings with Gaza following three days of closure in response to Thursday's rocket attack, according to Israeli official Peter Lerner.
The Erez crossing, the main passage for people between Gaza and Israel, was opened to allow Gazans in need of urgent medical attention to travel into Israel.
In addition, the Sufa crossing was opened to allow goods and cement into Gaza, and the Nahal Oz fuel depot was also opened.
Israel closed its border crossings with Gaza again on Thursday following a rocket attack from the Hamas-ruled enclave, which was at least the fifth such attack since the Egyptian-brokered truce went into effect on June 19.
Following Thursday's violation, for which no group has claimed responsibility, Israeli Defense Minister Ehud Barak instructed the army to close all the border crossings with the Palestinian territories.
The move marked the third time that the Jewish state closes the border in response to rocket attacks from Gaza since the implementation of the ceasefire. The previous two closures lasted for four days and one day respectively.