Police were called to the car park of Grosvenor Casino on Duchess Road in Sheffield shortly after 2.30am this morning to reports of a stabbing and disorder.
On arrival they found a 28-year-old man inside the casino with injuries to his stomach. They are not believed to be life threatening.
The suspect is then reported to have tried to flee the scene, hitting a 21-year-old woman with his car as he did so.
Her injuries are also not thought to be life threatening, police said.
The suspect – who is also a 28-year-old man – was later arrested on suspicion of attempted murder.
South Yorkshire Police inititally said the incident happened at the casino but has today confirmed the stabbing occured in the Hex nightclub.