Officers are appealing for witnesses and information following a suspected arson in Northwood on Thursday, April 20.
Police were called at around 6.55pm to reports that a derelict property in Sandy Lane was on fire.
Officers attended to assist colleagues from Hertfordshire Fire and Rescue Service at the scene, and road closures were put in place while the fire was extinguished.
Enquiries are continuing to establish the circumstances around how the fire started.
Detective Sergeant Darren Machin, from the Three Rivers Local Crime Unit, said: “Thankfully no one was injured during the incident, but it has resulted in extensive damage to the building. This site itself is dangerous, and I would like to emphasise that anyone who enters the site is not only committing a crime but also putting their safety at risk. We are treating this incident as deliberate at this time and our enquiries are continuing.
“If you believe you may have witnessed anyone acting suspiciously in the vicinity of Sandy Lane around the time specified or think you may have any information that could assist with our enquiries, please get in touch.
“Any information, even something that may seem relatively minor or insignificant, could be key to progressing our investigation.”
Anyone with information is asked to please email DS Machin at firstname.lastname@example.org
You can also report information online at herts.police.uk/report, speak to an operator in the Force Communications Room via the online web chat at herts.police.uk/contact or call the non-emergency number 101, quoting crime reference 41/31918/23.
Alternatively, you can stay 100 per cent anonymous by contacting the independent charity Crimestoppers on 0800 555 111 or via their untraceable online form at crimestoppers-uk.org.
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