An aide to Libya's Prime Minister, Ali Zeidan, has been kidnapped on the outskirts of the capital, Tripoli, government officials say.
Mohamed al-Ghattous is believed to have been seized last Sunday in the Ghot al-Roman district as he was driving from his home town of Misrata.
His car was found abandoned and the authorities have launched a search.
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Also last Sunday, Mr Zeidan warned that members of his government had received death threats.
He told a routine news briefing they were working under "very difficult conditions" since coming to power four months ago.
A cabinet source, speaking anonymously, told AFP news agency Mr Ghattous "was without doubt taken at a fake checkpoint".
It is thought the kidnappers could have been posing as security personnel.
"Nobody knows where he is. They left his car behind, probably they thought it could be traced," a government source told the Associated Press.
BBC report says there has been a sharp increase in security threats against the cabinet since the government announced it was taking steps to disarm and disband the militias.
Last week, the prime minister's building was briefly surrounded by an armed group demanding his resignation, and on Sunday, the justice ministry was similarly surrounded for several hours.
The government is still struggling to consolidate its powers over the many militias which formed after the war that toppled Col Muammar al-Qathafi. — BBC