OPP are searching for a man who robbed a Tecumseh bank after releasing what's described as a pepper spray substance into the air.

Police said it happened just before 8 p.m. Thursday at the TD Canada Trust bank on 11846 Tecumseh Rd E.

He allegedly stole an unidentified amount of money and fled.

Two people were taken to hospital as a precaution, police said.

Police are still searching for the suspect and are asking the public for tips.

Anyone with information can call Crime Stoppers, which is offering up to a $2,000 reward for information.