Two trainers at a gym here were stabbed by a co-worker Tuesday, police said.
The victims are undergoing medical treatment while the accused is absconding, they said.
The exact cause of the attack is not known but it seemed to be a case of rivalry, police said.
"We have identified the accused. He will be arrested soon for attempt to murder," Deputy Commissioner of Police Ravindra Shiswe said.
The incident occurred at the National Health League near Azad Maidan in south Mumbai.