Police have charged the four men arrested in connection with the killing of a Chinatown gambling house employee.

Alexander Nguyen, 31, Maauga Imoa, 24, Manu Tonga, 21, and Sione Vulangi, 26, were each charged with second-degree murder and felony kidnapping. Bail for each man was set at $1 million.

Detectives believe the suspects, who work at various illegal gambling establishments, beat a 42-year-old man on April 1. Police said the man worked at a gambling house and stole money.

A friend found the man’s tattooed body in the parking lot near the basketball courts at Moanalua Community Park April 1 and took him to the hospital, where he died shortly before 1 a.m. on April 2. He had suffered head injuries.

Police issued a CrimeStoppers bulletin last week asking for the public’s help in finding out what happened to the man and released a picture of a large tiger tattoo on the man’s back.

Detectives followed up on leads and arrested Nguyen at the main police station on Beretania Street about 5 p.m. Friday. The three other men were arrested about 1 p.m. Friday at the main station.

The Medical Examiner’s Office said the victim’s name was being withheld, pending notification of next of kin. An autopsy did not determine the cause of death and further test results were pending.