Three Israeli soldiers have been killed and others wounded by a gunman near the border with Egypt, the army says.
A male and a female soldier were found dead at an army post after failing to answer calls early on Saturday.
A third Israeli soldier and the alleged attacker – identified as an Egyptian policeman – were later killed during a search operation.
The incident happened just hours after a drug smuggling operation had been thwarted at the border.
An Israeli military spokesman, Col Richard Hecht, said drugs worth 1.6m shekels ($400,000) had been seized after someone used a ladder to cross the fence.
He said that this was assumed to be connected to the later shootings.
An army statement said: “An investigation is conducted in full cooperation with the Egyptian army.”
Later, both the Israeli and the Egyptian armies confirmed that the dead assailant was a member of Egypt’s security forces.