A hand grenade has exploded in Kuwait's information office in the Lebanese capital Beirut killing one person and injuring two others.
Lebanese security forces sealed off the building after the blast
It is not clear how the grenade came to be at the office, but it appears to have detonated by accident.
Reports say the dead man, a Lebanese security guard, was playing with it when the explosion occurred. He died after being taken to hospital.
The office in west Beirut is attached to Kuwait's embassy in Lebanon.
Police initially said one of the victims had been opening a parcel which exploded as the other man stood beside him, but this version of events quickly changed.
"It was an accident," said Kuwaiti ambassador Suleiman al-Said after inspecting the scene of the blast.
The dead man was identified Iyad al-Aleyli, a Lebanese citizen who was in charge of security at the office.
The two wounded employees - Hussam al-Jamal and Mirna Mugharbel - were rushed to hospital, the officials said.
"I was in the lift when I heard the blast and I helped evacuate one of the wounded," said Youssef Karyouti, a Kuwaiti who works in the same 16-storey building in the Saneya district.
It is the second fatal blast in Beirut in four days, but appears to have nothing to do with the string of unsolved bombings that have followed the killing of former Prime Minister Rafik Hariri in February.
Friday night's attack killed one person and injured 23 in the Christian district of Ashrafiya.