Police in Northern Ireland are appealing for information and witnesses after another cash machine robbery.

The latest ATM theft, the eighth in the North this year, took place at a garage just outside Dungiven in Co Derry shortly before 4.30am.

The digger used was stolen from a construction site just over half a mile from the scene of the robbery.

A number of security cameras at the garage recorded what happened and showed that the robbery took just under four minutes to complete.

Once removed from the wall the ATM was loaded into a van which had a hole cut in the roof.

However, unlike the other robberies, this time the digger was not set on fire afterwards.

It is not clear if this is because the robbers were disturbed and fled the scene before they could do so.

The theft happened just after the PSNI issued an appeal to people involved in the construction industry to lock up heavy plant machinery over the weekend.

There have now been ATM thefts in counties Antrim, Down, Fermanagh, Tyrone and Derry since the start of the year, and others in counties Cavan and Monaghan.

On Wednesday, a cash machine was ripped from the wall of the AIB bank on Main Street in Castleblayney.

The PSNI has set up a specialist team of detectives to investigate the thefts and is working closely with An Garda Síochána.

Police believe at least two organised criminal gangs are involved in the thefts, but say it is possible others are engaged in "copy cat" robberies.

"We are doing all we can to catch the people responsible, it is a key priority for us, however I want to reiterate that the key to stopping these crimes and getting ahead of these criminals is information from the public," said Detective Inspector Richard Thornton.

"We need people to report anything suspicious, including seeing any unusual activity in areas close to ATMs.

"For example, if you hear machinery late at night or in the early hours please let us know."

Senior PSNI officers briefed members of the Northern Ireland Policing Board on Thursday about their efforts to catch those responsible.

One of those who attended the meeting, Mervyn Storey of the DUP, said he understands it is a huge task given the number of ATMs in use across Northern Ireland, but has urged the police to do more.

"Given that yet another ATM has been stolen, the police must now deploy more resources to catching those responsible for this despicable crime," he said.

The police will hope the fact that the digger used in the latest theft was not burnt out might make it possible to recover DNA evidence.