VIDEO - Five members of Hamas' military wing, the Izz al-Din al-Qassam Brigades, were killed Wednesday morning after an IDF aircraft fired missiles at a bus and another vehicle carrying the group's operatives west of the Gaza town of Khan Younis. Video courtesy of Infolive.tv According to local sources, the bus was hit by several missiles as it was approaching a naval force post near Gaza's coast. Several people were wounded in the strike. Three of the men killed were reportedly senior commanders of the group's rocket unit. Palestinian sources estimated that the bus had been under surveillance since it left the Jabalya area. IDF: Strikes undermine Hamas' strength IDF and Shin Bet officials confirmed that two vehicles carrying Hamas men were attacked. According to the Israeli security forces, they had intelligence indicating that the vehicles were carrying members of Hamas' military wing. While both vehicles were hit, it appears that the passengers of the car managed to escape. Sources in the Israeli army noted that Hamas was responsible for terror activities in the Gaza Strip, including the firing of Qassam rockets, even when its members are not the ones firing the actual rockets. Car struck in Gaza (Photo: Reuters) "These actions, along with the IDF's ground forces' operations in the Strip, will eventually undermine the group's strength," an army official said. "This is not done in days, but Hamas is certainly suffering ongoing losses. Its motivation is still high, but the message is clear - as long as they continue to carry out attacks against Israeli targets, they continue to be a target for strikes." Meanwhile, Palestinian sources in Gaza reported Tuesday night that an Islamic Jihad member was killed in an IDF strike in the al-Bureij refugee camp in the central Strip. According to the report, the man, Zaki Abu-Zeid, died after an IDF aircraft fired at a group of lookouts belonging to the al-Quds Brigades, the Islamic Jihad's military wing. Two other group members were injured in the strike.