BEIRUT — Lebanese authorities detained a wife and suspected son of the leader of the Islamic State group several days ago, and she is being questioned, two senior Lebanese officials said Tuesday.

A military official said the woman and child were detained about 10 days ago while carrying fake identification cards.

Both officials refused to give further details about the woman who is believed to be one of the wives of Abu Bakr al-Baghdadi, the group’s reclusive leader. The officials spoke on condition of anonymity in line with regulations.