A man and a woman have been arrested over a hit-and-run which left an 81-year-old fighting for his life.
The pensioner was struck by a motorcycle which then sped off just before 9pm on Wednesday, Greater Manchester Police said.
A 24-year-old man and 26-year-old woman are being questioned in police custody after officers traced them to a property in the Moston area of Manchester on Saturday night.
The man was arrested on suspicion of causing serious injury by dangerous driving, failing to stop and report a collision, and perverting the course of justice.
The woman was arrested on suspicion of assisting an offender, conspiring to pervert the course of justice, and obstructing a constable.
The hit-and-run happened on Ashton New Road, in the Clayton suburb of the city, at 8.50pm on Wednesday, the force said.
The pensioner remains in hospital with life-threatening injuries.
Witnesses are being sought.