Gunman Kills Eight Worshippers in Yemen Mosque.

SANAA (Reuters) - A man shot dead eight worshippers and wounded two at a mosque in southern Yemen on Wednesday, security officials said.

The motive behind the attack were not immediately clear.

The officials said five men died on the spot and three died of their wounds later. The attack took place in Lahaj province, about 190 miles south of the capital Sanaa.

Security sources said the gunman, who was arrested, could be a Muslim extremist with a grudge against moderate Muslims.