Libya summoned the US ambassador to the country for questioning on Monday over the weekend capture of a suspected al-Qaeda leader on Libyan territory.

Anas al-Liby, a suspect in the 1998 bombings of the US embassies in Kenya and Tanzania, was seized in the capital, Tripoli, on Saturday.

Libya's minister of justice wanted "a number of explanations concerning the case", a statement said.

The US has said Mr Liby was "a legal and an appropriate target".

Mr Liby's son, Abdullah al-Raghie, has said his father was seized by masked gunmen early on Saturday morning and that some of them were Libyans.

He believes the Libyan government was implicated in his father's disappearance - a claim Tripoli denies.

Libya's justice minister Salah al-Marghani summoned US ambassador Deborah Jones for an audience on Monday morning, a foreign ministry statement said.

Anas al-Liby - real name is Nazih Abdul-Hamed al-Ruqai - is believed to have been one of the masterminds behind the 1998 US embassy attacks, which killed more than 220 people in Kenya and Tanzania.

The 49-year-old has been indicted in a New York court in connection with the attacks.

He has been on the FBI's most wanted list for more than a decade with a $5m (£3.1m) bounty on his head.

Defending the capture, US Secretary of State John Kerry said Mr al-Liby would face justice in a court of law.