Montreal police seek potential witness in case of missing Ariel Jeffrey Kouakou

Montreal police say they are seeking a possible witness in the case of a 10-year-old boy missing since March.

Police say they want to talk to a woman who was seen smoking a cigarette in the park where Ariel Jeffrey Kouakou was last seen.

READ MORE: Family of Ariel Jeffrey Kouakou petitioning province to form response unit

Insp. Ian Lafrenière says the woman is not the same as another woman who saw Kouakou shortly before he vanished.

WATCH BELOW: Kouakou family and friends seek community support

Lafrenière says the witness might be able to describe the situation in the park before Kouakou disappeared.

READ MORE: ‘We have to keep going’: Search continues for 10-year-old Ariel Jeffrey Kouakou

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She was identified in one of the more than 400 tips police have received since Kouakou vanished.

WATCH BELOW: Kouakou family wants police division to search for missing kids

Police say they believe that the Kouakou fell into a river and drowned, but his father has insisted in the past that he was abducted.

READ MORE: Montreal deploys ice breaker in search for Ariel Jeffrey Kouakou

Kouakou was last seen in Parc Des Bateliers, which borders the Rivière des Prairies, on March 12 after leaving his home in the Ahuntsic-Cartierville borough to visit a friend.