Photo: The Canadian Press

Montreal police are searching again this morning for a missing 10-year-old boy.

Ariel Jeffrey Kouakou was last seen on Monday, when he left his home in the city's Ahuntsic-Cartierville district for a friend's house.

Authorities say they still don't know exactly what happened to him, but his father has told reporters he's convinced his son was abducted.

A spokesman for the force says they are asking area residents to stay alert and are inviting anyone with information to contact them.

Police say the boy, who is French-speaking, is black, has black hair and black eyes and was wearing a black coat with a hood, grey pants and yellow shoes before he disappeared.