Two youths have been arrested after an attack on a woman near Belfast on Saturday night.
The woman suffered injuries when a boulder was hurled through the windscreen of a her car from a motorway bridge on M2 near Glengormley on the outskirts of north Belfast, Co Antrim.
The 56-year-old midwife was undergoing treatment in hospital for severe head injuries and a broken arm this morning.
The Police Service of Northern Ireland said it was treating the attack as attempted murder. It said the incident was the latest in a series of attacks on cars travelling along that area of the motorway this year.
Meanwhile a bus carrying 25 children and eight adults towards Belfast on the M2 was also attacked last night near Glengormley.
An iron bar was hurled at the windscreen from the overhead bridge, but failed to shatter the reinforced screen.
No one was injured in the incident, but the PSNI said it was potentially a "very serious incident".