Chelsea Halfpenny's grandad left critically injured in Gateshead 'hit and run'

Actress Chelsea Halfpenny appealed for information on social media

Four men have been arrested after the grandfather of actress Chelsea Halfpenny was critically injured in a suspected hit-and-run.

The 85-year-old was knocked down in the Leam Lane area of Gateshead on Friday evening, and remains in hospital.

Ms Halfpenny, who starred in TV shows Casualty and Emmerdale, made a plea for witnesses on social media.

Four men aged 30, 25, 23 and 18 have been arrested on suspicion of causing serious injury by dangerous driving.

Police said the 30-year-old man remained in custody.

The Gateshead-born actress took to Facebook in a bid to find out who was involved in the collision, which happened on Woodburn, at around 19:30 GMT, and branded those responsible as "scum".

An ambulance was called to Woodburn in the Leam Lane area of Gateshead

At the time, the 30-year-old wrote: "There are four lads who all have mams, dads, aunties, uncles, and friends so there are a lot of people in a very small area that have information on what happened last night.

"Do the right thing. You have left somebody in a critical condition. You will be found."

Northumbria Police said the victim remained in a "critical but stable condition" in hospital and officers are continuing to investigate. They have appealed for information.