Montreal police are seeking help from the public as they try to solve a brazen daytime theft of a cargo-load of silver worth an estimated $10 million from the city's port.

Montreal port theft

The grey container has the word "MAERSK" inscribed on its side. (Montreal police)

Const. Anie Lemieux says one or more individuals stole a semi-trailer from the west end of the island on Wednesday, then used it to haul the container full of the precious metal from the port later in the day.

Lemieux says the stolen truck is a white 1997 Freightliner with the licence plate L548854.

The container, which is grey and approximately 20-feet long, has the letters "MAERSK" inscribed on its side.

Surveillance footage shows the truck and container at the port, but the face of the driver isn't visible.

Anyone with information is asked to contact police at 514-393-1133.