A 2-year-old boy and his parents became the victims of a random acid attack that occurred over the weekend in North London.

Police are asking witnesses to come forward and help the family from Islington that sustained injuries after acid was thrown at them, according to The Guardian

The 40-year-old man, identified as Hai, his wife and their two-year-old son were attacked while they were walking along Copenhagen Street, near Charlotte Terrace.

The victims were immediately taken to a North London hospital and were then transferred to another facility. The mother and her child suffered minor injuries while the father was being treated with “life-changing” injuries.

Police, London Fire Brigade and London Ambulance Service were called to the scene, according to Mirror. A spokeswoman for the London Fire Brigade said that the substance is “confirmed a strong acidic and oxidising substance.”

A local shopkeeper named Murat Kayran said that people barged in the shop to buy water to help the Chinese family who got attacked.

“They were a Chinese family. A woman frantically ran in here when it happened and said: ‘There’s been an acid attack’,” said Kayran. “She bought one bottle at first and then after that bought three more [1.5-litre] bottles of water. Then a gentleman came in and bought another three … It’s such a scary thing to happen.”

Meanwhile, a woman who claims to have known Hai for 20 years believe that he was targeted.

No one has been arrested yet and police are encouraging anyone who might have information to contact them.