The woman was discovered underneath the M50 toll bridge in Dublin, hours before her seven-month-old baby was found unresponsive at home

A mum was found dead beneath a bridge hours before her son was found unresponsive and later died.

Police were initially called to Lower Road in the Strawberry Beds in Dublin, Ireland, at around 3.45am on Thursday to reports of a pedestrian seen behaving erratically in the area.

It was there officers discovered the body of a woman underneath the M50 toll plaza bridge, Dublin Live reports.

Police then rushed to a house in nearby where a seven-month-old baby was found unresponsive and died at the scene a short time later.

Officers are treating the incident as a family tragedy and are not seeking anyone in connection with the incident.

Detectives from Lucan found no signs of violence or evidence of a violent death when they carried out a forensic examination of the house.