<p>A loud blast hit the Libyan capital Tripoli early on Tuesday, residents said, with the noise audible across much of the city and dark smoke in the sky.</p>.<p>Local television stations reported that a suicide bomber on a motorbike had detonated a device at a roundabout where the main highway from the west enters the city, but there was no immediate official confirmation.</p>.<p>If confirmed as an attack, it would be the first for more than a year.</p>.<p>"I was driving on the motorway early morning at about 7.30 and I heard a massive explosion... Most of the other vehicles turned back after we saw black smoke in the sky," said a witness who asked not to be named.</p>.<p>Libya has been convulsed by political chaos and warfare for much of the period since the 2011 revolution that ousted Muammar Gaddafi.</p>.<p>The country is split between the Tripoli-based Government of National Accord (GNA) and the eastern-based Libyan National Army (LNA) loyal to Khalifa Haftar in Benghazi.</p>.<p>In June, the GNA ended a 14-month LNA assault on the capital and forced it to retreat, bringing a close to months of heavy bombardment.</p>
<p>A loud blast hit the Libyan capital Tripoli early on Tuesday, residents said, with the noise audible across much of the city and dark smoke in the sky.</p>.<p>Local television stations reported that a suicide bomber on a motorbike had detonated a device at a roundabout where the main highway from the west enters the city, but there was no immediate official confirmation.</p>.<p>If confirmed as an attack, it would be the first for more than a year.</p>.<p>"I was driving on the motorway early morning at about 7.30 and I heard a massive explosion... Most of the other vehicles turned back after we saw black smoke in the sky," said a witness who asked not to be named.</p>.<p>Libya has been convulsed by political chaos and warfare for much of the period since the 2011 revolution that ousted Muammar Gaddafi.</p>.<p>The country is split between the Tripoli-based Government of National Accord (GNA) and the eastern-based Libyan National Army (LNA) loyal to Khalifa Haftar in Benghazi.</p>.<p>In June, the GNA ended a 14-month LNA assault on the capital and forced it to retreat, bringing a close to months of heavy bombardment.</p>