Nearly $400,000 worth of original Canadian artwork, including five paintings by the Group of Seven, was stolen in a late night heist in Toronto Sunday.

Toronto police responded to a break-and-enter call at the Canadian Fine Arts store shortly after 10 p.m.

They found 11 paintings missing, including works by Group of Seven members Frederick J. Varley, J.E.H. MacDonald, Alfred J. Casson, Frank H. Johnston and Alexander Y. Jackson.

Police suspect more than one person was involved in the robbery.

The thieves forced their way into the back of the gallery, setting off an alarm as they broke in, said Det. Erwin Huber.

They set off additional motion alarms as they ran straight to a room where the Group of Seven paintings were kept. They took the 11 paintings, frames and all.

Police suspect the thieves were professionals who knew which paintings in the gallery were most valuable.