Photo: Reuters

US warplanes have carried out attacks on militants from the so-called Islamic State (IS) in Libya, killing at least 30 people, the BBC reports.

The strikes hit an IS training camp and “likely” killed a senior Tunisian extremist leader, US officials said.

Noureddine Chouchane is linked to two attacks in Tunisia last year, including an attack that killed 30 Britons.

The IS group has operated in Libya for about a year and the US estimates it has up to 6,000 fighters there.

Libya remains in chaos more than four years after the overthrow of former leader Muammar Gaddafi, and is being fought over by a number of groups, including the self-styled IS.

The mayor of Sabratha said that a building in the city, west of the capital Tripoli, had been hit.

He put the death toll at 41, and said the majority of those killed were Tunisians.