Port Lincoln police are investigating a number of home and car break-ins near Kirton Point on Saturday.
Just before 2am on Saturday the occupant of a Knott Street home woke to noises and found a person standing in the hallway.
The resident yelled at the person who ran off and climbed over a fence into Baltimore Street.
A short time later, the occupant of a Baltimore Street home disturbed two men attempting to jemmy and kick open their front doors.
The residents yelled at them and the men fled.
A check of the property revealed their shed had also been entered but nothing was stolen.
Police received a report of a person inside a shed at another Baltimore Street address about 2.10am.
The resident confronted the suspect who then picked up a shovel and assaulted him, cutting his hand, before leaving.
The shed and a car parked at the address were damaged.
At 2.40am a car was broken into at a Monash Road home but nothing was reported stolen.
A car parked at Luke Street was broken into just before 3am where the suspect was disturbed and ran off. Nothing was stolen from the car.
In a separate incident, police responded to alarm activations at about 3.40am at a business premises in Liverpool Street.
Police found entry had been gained to the premises but it was unknown if anything had been stolen.
Anyone with information on the incidents or who witnessed suspicious activity in those areas is urged to contact Port Lincoln police on 8688 3020 or Crime Stoppers on 1800 333 000.