York Regional Police are searching for two sets of suspects in connection with a total of four bank robberies across the region.

A TD Canada Trust located at 8601 Warden Ave. was the first to be hit, with the call coming in at 8:15 a.m., police said Friday in a news release.

"Two suspects entered the bank and approached the teller while one suspect turned over a note indicating he had a gun, although no weapon was seen," they said.

About 40 minutes later, suspects matching the same description hit another TD Canada Trust branch, this time at 3 Wooten Way North in Markham.

They obtained cash in both instances.

Police describe the suspects as black, male, estimated to be 20 years old and 5'10" tall. They were wearing dark clothing and baseball caps.

Later in the morning, at approximately 10:45 a.m., a male suspect entered the Bank of Nova Scotia branch located at 9600 Islington Ave. in Vaughan.

"(He) jumped over the banking counter, indicating he had a gun," police said.

About 15 minutes after that robbery, a suspect that matched the same description hit a TD branch at 154 Woodbridge Ave.

In that second incident, a witness told police they had seen a black handgun in the suspect's waistband.

The Vaughan suspect is described as a white male about 40 years of age. He is 5'7" and has a medium build. He was wearing glasses, a baseball hat, blue jeans and is believed to be driving a black pickup truck.

Police say if you are ever caught up in a robbery, co-operate with the suspect and do not fight back. Instead, try to remember the best description possible of the robber.

Businesses should keep their video surveillance equipment well-maintained, they said.

York Police ask anyone with information about these four robberies to contact them at 1-866-876-5423, ext. 6630, Crime Stoppers at 1-800-222-tips, leave an anonymous tip at www.1800222tips.com or text a tip by sending TIPYORK and a message to CRIMES (274637).