Thanet Police are questioning two people after the victim of Wednesday's attack in Cliftonville died in hospital.
A 44 year old Margate man and a 21-year-old of no fixed abode were arrested on Wednesday night.
The victim, said to be in his late forties, was discovered with severe head injuries by a cleaner at the toilets in Fifth Avenue on Wednesday morning.
He died in hospital on Wednesday night, a post mortem being due to have taken place yesterday.
A Kent Police spokesman said: "We urgently need to know how this man received such severe head injuries.
"I would appeal to the local community to have confidence in the police that any information provided will be treated sensitively and in confidence."