Police arrived at 3812 Trace Way after several callers said they'd heard shots inside and behind the home.
Detectives with the Fort Wayne Police Gang and Violent Crimes Unit found the home riddled with bullets. Inside was an armory of guns and ammunition, drugs and drug paraphernalia, police said.
Four men were taken into custody; three were charged with felonies. A 21-year-old was not formally charged, according to an Allen County Jail spokeswoman.
The first call came in about 8:15 p.m. Thursday, and another followed an hour later, according to court documents. Police also got a report of a walk-in shooting victim at a hospital.
Detectives found a red Cadillac with a tan top parked in front of the residence. The driver inside said he'd heard that his niece had been shot and was inside the home, court documents said. Believing that a wounded woman might be inside the home, officers rammed the door and entered. They found several guns in a bedroom and a partially smoked marijuana cigar, court documents said.
Outside, officers observed 20 to 30 bullet holes for bullets that had entered and exited the home, shattered glass on the ground, and shell casings of multiple sizes.
Two guns, a Smith & Wesson SW99 9 mm, fully loaded and lying on the floor of the entryway, and a Glock model 19 9 mm, loaded with a round in the chamber but lacking a magazine in the well, were discovered to have been stolen.
Other guns included a Masterpiece Arms pistol 9 mm with a 40-round magazine and rounds partially chambered. There were two more magazines on a bed, one a large pistol drum magazine loaded with 50 rounds, court documents said.
On the floor in plain view was an AR-style Bushmaster rifle with the serial number completely filed off, loaded with a black 40-round magazine and a round in the chamber. The safety was off. The gun was a .223-caliber, court documents said.
Lying on a bed was a child's backpack with a Chiappa AK-9, 9 mm, loaded with one round, but no magazine.
Leroy D. Trice, 20, of the 5300 block of Fairfield Avenue, emerged from a rear closet.
On top of a large pile of clothing in that closet, police found a clear plastic bag containing round blue bills that were found to be oxycodone hydrochloride, court documents said.
Trice told police he'd been in the home when the shooting occurred and had run to the front bedroom to hide.
Paperwork from banks was found in the home with Trice's name on it, along with scales with cocaine residue, marijuana blunts and residue around the residence.
Trice was charged with possession of a narcotic drug, with two misdemeanor charges for possession of marijuana and visiting a common nuisance. He was released Friday on $10,000 bond.
Also arrested was Jessie T. Waller, 19, of the 800 block of Hamilton Avenue, charged with carrying a handgun without a license and a misdemeanor charge of visiting a common nuisance.
He is being held at the jail without bond.
Briandre Q. Howard, 24, no address listed, was charged with possession of cocaine, with two misdemeanor charges of visiting a common nuisance and false informing. He was being held in lieu of $12,500 bail.
The wounded woman found at the hospital Thursday evening denied being shot at the home on Trace Way, according to the Fort Wayne Police Department. Detectives are continuing to investigate, police said.