A Palestinian gunman killed three Israeli guards and wounded a fourth in an attack on a Jewish settlement in the occupied west bank before himself being shot dead.

An Israeli police spokeswoman said the gunman approached Har Adar as part of a group of Palestinians who work at the settlement, and aroused the suspicion of private guards and paramilitary Israeli police posted at the entrance checkpoint.

Challenged to halt, the Palestinian “Opened his shirt, drew a pistol and fired at the security staff and troopers at close range.

The police statement did not elaborate on the identities of the Israeli casualties. It said the slain gunman, from the nearby Palestinian village of Beit Suriq, had an Israeli work permit.

No group has taken responsibility for the attack, although Gaza-based Palestinian militant organizations Hamas and Islamic jihad welcomed it.