No one was injured as a result of four fires that took place in Saskatoon Tuesday.

The first fire took place around 7:30 in the morning in an alley in the 400 block of Avenue P South. Once Saskatoon Police arrived, they found a garbage can on fire.

At 8:20, officers responded to a dumpster on fire in an alley in the 200 block of Avenue U South.

In the evening just before 8 o’clock, emergency crews responded to another dumpster fire. This time in the 1400 block of 20th Street West.

Minutes later, a mattress was found on fire in between to detached garages in an alley in the 1300 block of 20th Street West.

Police are investigating and anyone who witnessed any suspicious activity or people in the area at those time is asked to contact Saskatoon Police or Crime Stoppers.