Toronto police are searching for a man they say sprayed two subway passengers with an unknown substance Friday afternoon, sending one to hospital.

The incident happened on a northbound train near Spadina station at about 1:45 p.m. when the passengers were approached by an unknown man, said police in a press release Friday.

The man sprayed the passengers, police allege. One of the passenger’s eyes became red and irritated, and the passenger was taken to hospital.

A photo released by Toronto police shows a man carrying a spray bottle in one hand, pointed towards the camera, and a green plastic shopping bag in the other.

Police said the man was described as six feet tall. He wore a black leather jacket with a grey hoodie, black pants and dark shoes with white laces.

Anyone with information is encouraged to contact police at 416-808-1400 or anonymously through Crime Stoppers.