GAZA, May 26 (Xinhua) -- Israeli war jets struck around midnight on Saturday two military facilities that belong to the Islamic Hamas movement in southern Gaza Strip, with no injuries reported, according to medics and security sources.

The sources said Israeli war jets launched several missiles at a training military facility that belongs to Hamas west of the southern Gaza town of Rafah. Firefighters and medical crews rushed to the targeted place.

The war jets also targeted another military facility west of the town of Khan Younis in southern Gaza Strip, according to the security sources and medics.

The two Israeli airstrikes were carried out in response to an earlier infiltration of four Palestinian youths who cut the fence of the border between eastern Gaza Strip and Israel.

Israeli and Palestinian media reported that the young men entered Israel, burned an Israeli army military post and returned to Gaza.

The media reports also said that Palestinian youths flew kites and balloons carrying fire bombs that landed on Israel, causing large fire on farms.

Violence erupted on the border between Gaza Strip and Israel since the start of the mass Palestinian rallies on March 30, where 116 Palestinians were reportedly killed and thousands others injured.