Three cars, a truck and a derelict fishing boat were torched Monday by arsonists suspected of also lighting a fire hours earlier at the old power station in Coogee.

Firefighters notified police of suspicious vehicle fires on Mills Street while they were en route to the blaze at the derelict power house.

Police this week could not confirm whether a serial arsonist or group is responsible.

The incidents follow a string of suspicious fires since February in which firebugs­—who have eluded police—have torched cars and property in South Fremantle, Hilton, Hamilton Hill, Spearwood and Munster.

Last week, intruders left a $200,000 damage bill after setting alight Beaconsfield pensioner Jan ter Horst’s home (“Fire-bombed,” Herald, November 2, 2013). Neighbours saved the house with garden hoses.

On Wednesday, arson detectives were called to Canning Vale where an ATM was set alight at the Livingstone shopping centre, causing widespread damage.

In May, arsonists struck in South Fremantle where they set fire to cars and property on King William and Grey Streets.

They were lit three days after arsonists attacked a Hilton house on May 15. No-one was injured but the fire destroyed most of the building and its contents.

The attacks follow a deliberately lit blaze on April 10 which caused $50,000 damage to Muscle Worx on Rockingham Road in Spearwood.

The fitness supplements shop had to be rebuilt.

On March 28, a suspicious fire caused extensive damage to a gym at the Hamilton Hill shopping centre on Rockingham Road, leaving a reported damage bill of $10,000.

On February 27, three males set fire to a power pole and median strip on Leach Highway in Willagee.

People with information on these crimes are urged to call Crime Stoppers on 1800333000. Rewards of up to $50,000 are offered for information leading to a conviction.

WA Police laid 196 arson-related charges from July 2010 to June 2011.

No charges have been laid for any of the attacks this year.

by CARMELO AMALFI