A group of militants including a suicide bomber targeted the head offices of Libya's electoral commission in Tripoli on Wednesday, setting fire to the building, a spokesman said.
"A suicide bomber blew up himself inside the commission and the others set a part of the building on fire," said spokesman Khaled Omar.
"We [the staff] are out of the building now while the security people deal with the incident."
Pictures posted on social media showed thick black smoke billowing from the site of the attack, west of central Tripoli.
The electoral commission has been registering voters ahead of new elections that the United Nations says it hopes can be held in Libya before the end of the year.
Source: News Agencies, Edited by website team