Hamilton police say they have seen a spike in bicycle thefts this summer.

In the majority of cases, thieves have been taking bikes from unlocked sheds or garages, police said.

It's important for people to write down the serial number of their bicycles to help find them if they're stolen, police said.

A form including what information should be taken down can be found at https://hamiltonpolice.on.ca/sites/default/files/bike_guard_form.pdf.