Corby David Les Ross 'intimidated' over Rubix nightclub
A club owner beaten to death almost a year ago was intimidated by organised criminals intent on taking over his share of the business, police said.
The body of David 'Les' Ross, 39, was discovered in a Village Inn Express in Corby, Northants, on 17 December 2012.
Several people have been arrested and bailed in the inquiry, but no-one has been charged with his murder.
Police said they believe Mr Ross's death is connected to his involvement with the Rubix nightclub in the town.
Det Ch Insp Martin Kinchin, of the East Midlands Major Crime Team, said he was not suggesting "anything untoward" about the club.
"Our investigation has found no evidence that Mr Ross was involved in crime, but we believe he may have been targeted by organised criminals trying to take over his share of the nightclub," he added.
He said people with "key information" could be fearful of getting involved with the investigation because they were involved in crime themselves.
"We are sure there are still people in Corby who may have vital information in helping us to establish who was responsible for the death of Mr Ross," he added.
A 40-year-old man has been charged with a burglary at Mr Ross's home, which the club owner had reported to police three days before he was found dead.
The break-in had caused him to stay at the hotel in the town centre.
Police are due to be in the The Jamb near Village Inn Express on Monday, one year on from the night of Mr Ross's death.
A van will be showing CCTV footage previously released to the media in the inquiry.