SAN JOSE — A man who fatally shot his father and critically wounded his mother earlier this month was carrying out a plot to get his inheritance faster, investigators allege in newly unsealed court files.

Duong Jimmy Trung Luu, 25, is currently being held without bail at the Santa Clara County Main Jail on suspicion of murder and attempted murder in the grisly May 20 attack on his parents at a mobile home park on Senter Road. His roommate and alleged accomplice, 27-year-old Madison Muong, is being held on the same charges.

In a report about the case, San Jose Police Sgt. John Barg wrote that a mutual acquaintance of the two suspects told detectives that Luu and Muong “separately confessed … that they killed Jimmy Luu’s parents.”

The acquaintance also stated that each of the suspects independently offered details about the crime that only someone involved would know, according to the police account.

“Jimmy Luu and Madison Muong also told the associate that the motive behind the crime was financial,” Barg wrote. “They hatched a plan to murder Jimmy Luu’s parents in order to collect and split his inheritance.”

Around 3:15 a.m. on May 20, officers were called to the Spanish Cove Mobile Home Park for reports of a shooting. They entered the home and found Luu’s 68-year-old mother on a couch in a front room suffering from a gunshot wound to her face, police said. She was rushed to a local hospital and remains listed in critical condition.

When officers got to a rear bedroom, they found Luu’s father, 70-year-old Thao Quoc Luu, dead from a gunshot wound to his chest, police said. Each of the parents had been shot once, and two 9 mm shell casings were recovered by investigators.

A law-enforcement source told this news organization that a murder-suicide was initially explored as a possible motive, but police said the ensuing investigation turned up evidence and the informant, all of which pointed at Jimmy Luu and Muong, who shared an apartment in San Jose.

That eventually led to the SJPD Covert Response Unit heading to their apartment two days after the shooting to serve a search warrant. Police said detectives recovered a handgun believed to have been used in the shooting, along with clothing and other evidence tying the pair to the crime.

The shooting marked San Jose’s 11th homicide of the year, and the fifth in less than three weeks after the city went three months without a slaying. There were 13 homicides recorded at this point in 2017.

Anyone with information about the case can contact SJPD homicide Detective Sgt. John Barg or Detective Raul Corral at 408-277-5283 or Silicon Valley Crime Stoppers at 408-947-STOP or at svcrimestoppers.org. Tipsters may be eligible for a cash reward.