An English man has been arrested in connection with a murder investigation in Co Meath.

It relates to an investigation into the murders of William Maughan and Anastasija Varslavane in 2015.

The couple were reported missing on Tuesday April 14th that year.

They had been together since 2014 and lived in a caravan in Gormanston.

William had decided to return to his family home in Tallaght, Dublin with Anna.

On that Tuesday morning William went to Balbriggan followed shortly afterwards by Anastasija.

They ran some errands and made contact with William’s mother, Helen, to arrange for her to travel from Tallaght to Gormanston to collect them and their belongings.

William Maughan and Anna Varslavane | Picture by: An Garda Síochána

William and Anna got a taxi together from Balbriggan to Gormanston just shortly after 2.30pm.

Helen arrived in Gormanston just before 3.00pm but could not find William.

William and Anna never showed up and were reported missing that evening.

An extensive investigation was launched with several searches and enquires carried out.

It was upgraded to a murder investigation following a review of the case.

Gardaí attached to the Detective Unit at Ashbourne and members of the Serious Crime Review Team, Garda National Bureau Criminal Investigation (GNBCI) arrested a man, aged in his 50s, on Tuesday morning.

This followed an investigation into the activities of an organised crime group based in the Louth/Meath area.

The man is currently detained under Section 50 Criminal Justice Act at Ashbourne Garda station.

He can be detained for up to seven days.

The offences under investigation also include the discovery of guns in Gormanston in January and the discovery of a large quantity of ammunition last May.

Gardaí say investigations are ongoing.