Detectives investigating the theft of transit vans and tippers in Kent have arrested four people.

Between December 19 and January 10, a number of the vehicles were reported stolen across Aylesford and Medway.

On the evening of January 10, following an automatic number plate recognition (ANPR) camera activation, two vehicles were stopped on the M25 near Orpington.

Four men in the vehicles, a 27-year-old from Middlesex, a 34-year-old from Rochester, a 25-year-old from Croydon and a 66-year-old from Southwark were arrested on suspicion of theft of motor vehicle.

They were questioned by officers, before being released on bail pending further investigation until March 5.

Investigating officer, DC Raj Dusanjh said: "Many of the vans that have been targeted have had valuables such as tools or building supplies in them.

"With the four arrests we have made our investigation is making good progress, but I would encourage people to remove all valuables from their vehicles before leaving them unattended.

"Where possible, owners should leave their vehicles in a garage, or a secure car park or well lit area to deter thieves.’

For further information about protecting your vehicle, visitwww.kent.police.uk/yourguide