A crowdfunding campaign, set up by a mother who was touched by an act of kindness from a stranger, has reached £10,000 in just three days.

Mairi Holden returned to her car from a children's hospital to discover a mystery benefactor had left her money to pay for two parking tickets she had received while taking her young son to hospital.

The kind stranger also left the 35-year-old a note saying: "Pay it then forget it happened."

Ms Holden took to Facebook to try to track down and thank the person who left the money tucked in behind the tickets on her pink Honda Jazz car.

They had been issued after she took her unwell son to Edinburgh's Royal Hospital for Sick Children and unexpectedly had to stay in overnight.

The mother-of-one had parked on the single yellow lines outside the hospital.

Her post quickly went viral as people from around the world were touched by the act of kindness, inspiring her to set up a campaign to raise funds for the children's hospital.

On Monday, the lifestyle coach confirmed donations totalling £10,001.89.

She said: "This is just mind blowing. With 709 people from across the world each performing their own random act of kindness, this has been raised in 72 hours!!

"Not only that, but this will carry on forever with the families of children who are helped with this increasing amount.

"More children's lives will be saved, more children helped, and more happy, grateful people as a result. It will travel on for years to come.

"Thank you for all your kind words and messages. We should all be so proud of ourselves for making this happen. I may be the face of it, but it is in no way down to me, it's an absolute collective effort of everyone who is taking part.

"Thanks also to the media and the social media sharers and likers who are helping this turn global. What a fantastic thing is happening through many wonderful people."

Ms Holden says she has not tracked down her mystery benefactor yet but is still hoping to find him or her and share the news of the fundraising campaign.