One of three people arrested following a bank robbery in Guelph was then taken to hospital with serious injuries.

Guelph bank robbery

Ontario’s Special Investigations Unit has been called in to probe the circumstances around the injury.

The RBC branch at Gordon Street and Kortright Road was robbed around 10:30 a.m. Thursday.

Meghan Stirling, who works in the unit next to the bank, says someone who had been in the bank came into her store and told her to call the police.

They told her a group of people had entered the bank claiming they had guns and were robbing it.

Stirling called 911.

“As we were on the phone … two people came out and ran to the getaway car, and then drove off,” she said.

Guelph RBC robbery

Exactly what happened next is unclear.

The car ended up mounting a curb and hitting a sign at a separate plaza on Gordon Street near Lowes Road, about two kilometres south of the bank. There were visible signs of damage to its back passenger door.

Mike Durick, who works at a nearby variety store, watched as police moved in.

“I saw there was a lot of activity – police cars and officers,” he said.

“They had their guns drawn. Everything happened so fast.”

Bank robbery Guelph

Three people were placed under arrest. The SIU describes them as "young men."

One of the arrestees was taken to hospital with serious injuries. According to the SIU, he had been in the back seat of the car.

The SIU is called in when there is reason to believe police action could have contributed to a serious injury or death.

With reporting by Krista Simpson