Libya's state news agency said on Saturday says Moussa Ibrahim, the spokesman for late leader Muammar Gaddafi, has been captured by the forces of the interim Libyan government at a checkpoint in the town of Tarhouna.
Other Libyan officials say they are sceptical, as such reports have proved false in the past, and the prime minister's office did not provide any photographic or video evidence of the reported capture.
Tarhouna is near Bani Walid, one of last strongholds of pro-Gaddafi forces in the closing stages of last year's conflicts.
Fluent in English, Ibrahim would hold regular press conferences in the luxury Tripoli hotel were journalists stayed during last year's war.
(Sources: BBC, Reuters, Associated Press)