According to Northumbria police, the brothers went to the Mowbray Park near their home around 5.20pm yesterday and were due home around 8pm but didn't make it home and have not been answering their mobile phones.
This morning the police released description of the boys in an appeal to find them...
"We have descriptions of the three boys who are Polish, speak good English and had bicycles with them. Remus, 15, is 5 feet 7" tall, slim build, dark coloured hair in a big quiff at the front and shaved at the back. Last seen wearing joggers, baseball cap and t-shirt and a black cycling helmet. Janko, 12, is 4 feet 8" tall, fairer hair styled in a quiff and short at the back, medium build, last seen wearing smart mustard coloured chinos, converse type trainers, blue lightweight waterproof jacket with a white zip and a silver cycling helmet
"David, 10, is 4 feet 8" tall, shaggy dark brown hair, chubby build, possibly wearing shorts and a top and a silver coloured cycling helmet." A spokesperson said