Two men arrested in connection with an attempted robbery and the ramming of a garda car in Mohill, Co Leitrim early yesterday morning have been released without charge.
A file is to be prepared for the Director of Public Prosecutions.
A juvenile, aged in his late teens, remains in custody.
A fourth person - a man - who was involved in a road crash on the Mohill to Drumlish Road - is still being treated in hospital.
Gardaí are seeking a fifth individual in connection with the investigation.
Anyone with information or video footage is asked to contact Carrick-on-Shannon Garda Station on 071-9650510 the Garda Confidential Line on 1800 666 111 or any garda station.
