Fourth explosion rocks Saudi capital

A fourth explosion has rocked the Saudi capital of Riyadh, targeting a joint US-Saudi-owned company's headquarters, security officials said.

It comes after a car bomb exploded in a compound housing westerners.

The officials said the car crashed into a residential compound in the eastern part of the Saudi Arabian capital, Riyadh.

The officials said the explosion caused an unspecified number of injuries.

No details were available on the identities of the reported victims.

The blast was one of three reported in Riyadh last night, an Interior Ministry official told the state-run Saudi Press Agency.

Eyewitness, Nick Holt-Kentwell, who works in the Middle Eastern country said emergency services rushed to the scene of the “massive” explosion within minutes.

Saudi security officials have said a car packed with explosives crashed into the residential compound in Garnata, an eastern suburb of the city, causing casualties.