Police have launched an investigation in to a spate of fire-raising which has seen cars and new-build properties and a school deliberately set alight.

Officers have launched a probe encompassing several incidents which have taken place over a four day period in Alexandria.

The first incident occurred around 2am on June 19 when wheelie bins were set on fire outside a house in India Street.

Two more fires took place on construction sites in Napierston Place and Campbell Street were set alight at 3am and 3.25am on the same day as the bin fires.

A total of four cars have also been set on fire.

The first was in Dalmonach Road at 7am on June 19.

The other two car fires took place in Thomas Street at 1am and Glebe Gardens at around 3am on June 21.

Police are also investigating an attempt to set fire to St Mary's Primary School in Bank Street between 1am and 2.10am on June 22.

Fire fighters managed to extinguish the flames before the fire could take hold.

During this time however another vehicle was set fire to on Second Avenue.

It is not yet known if these incidents are linked.

Police Scotland have said extensive enquiries are underway with CCTV from in and around the areas being reviewed.

Officers have also been carrying out door-to-door enquiries for any additional information which could assist the investigation.

Forensic teams have also taken objects from the different crime scenes for further examination and analysis.

Chief Inspector Donald Leitch, the area commander for West Dunbartonshire said: "These incidents will no doubt be causing some concern to local people so I would like to reassure them that we are doing all we can to find whoever is responsible.

"Extensive enquiries are being undertaken by detectives with a number of lines of enquiry being considered.

"At this stage, we do not know if the incidents are linked, if they have been carried out by one person or if they are random but I can assure you all scenarios are being considered and will be followed up. 

“I would like to appeal to people in the areas involved to think back and consider if they saw or heard anything suspicious or unusual.

"No matter how insignificant you think your information is please pass it on to us and let us work out its relevance.

"I would also ask people to be vigilant and report any suspicious activity to police.

"Additional officers will be on patrol to provide reassurance for people and anyone with any concerns should speak to officers.”

Anyone with information is asked to call officers at Clydebank Police Station via 101.

Alternatively, please call Crimestoppers on 0800 555 111 where information can be given anonymously.