A man who died in a crash alongside his one-year-old son was "full of life" and a "loving father", his uncle has said.
Adnan Ashraf Jarral, 35, and his son, Usman Adnan Jarral, died when their people carrier was in collision with a car that had been in a police pursuit in Sheffield on Friday night.
Mr Jarral's uncle, Shafqat Mirza, said his nephew was "humble and polite".
Husband and wife Miroslave Duna, 50, and Vlasta Dunova, 41, were also in the car and died in the crash.
The couple are understood to have been friends of Mr Jarral's wife, Erica Korscenova, 32, who is in a stable condition in hospital.
Their 22-year-old daughter, Nikola Dunova, was also injured and remains in hospital in a serious but stable condition. Her three-year-old daughter, Livia Matova, who was also in the car and remains in a critical condition.
The crash between the people carrier and black VW Golf happened in the Darnall area shortly after 20:50 GMT on Friday.
The Golf was in collision with Mr Jarral's VW Touran as it turned right on to Bannham Road.
Mr Mirza said: "It's been absolutely devastating for all of us and all the family.
"Here we have a young man who was with us, around us, always asking everybody how we are, and now we find that he is no longer with us.
"It's something that we can't come to terms with. It was absolutely horrific. So devastating."
Local resident Tufail Hussain, 80, who was one of the first people to get to the wreckage, said: "It was just terrible. It's the worst thing I have ever seen.
"The whole community is shocked but they have pulled together. Everyone came together to help."
Det Ch Insp Jude Ashmore, of South Yorkshire Police, said it was an "incredibly tragic accident".
He praised the community for their response in helping emergency services.
The men in the Golf, aged 17, 18 and 23, were arrested and remain in custody after suffering minor injuries.
The police watchdog, the Independent Office for Police Conduct (IOPC), has started an investigation.