A scary moment at the Rogers Centre tonight when a fan is believed to have suffered a heart attack while sitting in the front row of the Blue Jays-White Sox game.

The game was in the seventh inning when play was halted for four minutes while emergency personnel could reach the fan.

CPR was performed on the individual before play was even stopped. The fan was placed onto a stretcher and carted off the field.

Blue Jays announcer Mike Wilner noticed that chest compressions were used, tweeting, "Scary stuff here at Rogers Centre - I've never had to call play by play of chest compressions before. Say a prayer for that fan. #Bluejays"

There has been no immediate word on the fan's condition.