Gardaí in Leitrim have arrested a fourth person in connection with the ongoing investigation into the murder of Patrick Heeran, who was last seen in Mohill, on Monday 3rd October 2011.
The man, aged in his late 30s, is currently being detained at Thurles Garda Station under Section 50 of the Criminal Justice Act 2007.
Investigations are ongoing.
Patrick Heeran was 48 at the time of his disappearance.
A murder investigation is ongoing since 2016.
