Kuwait's ambassador to Lebanon says a hand grenade exploded inside his country's information office in Beirut, killing a Lebanese employee.

But Ambassador Ali Suleiman al-Seed told reporters the blast was not an act of terrorism. He says the man was playing around with some old explosives when the grenade went off. The Associated Press quotes the ambassador as saying the grenade was left over from Lebanon's 1975 to 1990 civil war.

Earlier, Lebanese security officials said the blast was caused by a parcel bomb.

Some information in this story provided by AP.