CHICAGO, Illinois (CNN) -- Chicago police on Wednesday found a handgun near where the body of one of actress Jennifer Hudson's three slain relatives was discovered this week.
Police said they recovered a weapon in an alley within a block of where Hudson's 7-year-old nephew, Julian King, was found dead in an SUV on Monday morning. Aerial footage of the scene taken by Chicago TV station WLS showed an investigator putting a pistol in a box.
A police spokesman said testing was needed to confirm whether the weapon was connected to the Hudson case.
Julian's body was found in an abandoned Chevrolet Suburban on Chicago's West Side. Police had begun a massive search for him on Friday, the day Hudson's mother, Darnell Donerson, and brother, Jason Hudson, were found slain in their South Side Chicago home.
All three victims died from multiple gunshot wounds, authorities said.
The pistol was found by one of 50 police academy recruits who were searching parts of the city for possible evidence in the case, Deputy Chief Nick Roti said.
The recruit spotted the weapon in the thick shrubbery of a vacant alley around the corner from where the sport utility vehicle was found, Roti said.
The site where the SUV was found has turned into a makeshift memorial for Julian, Roti said. Stuffed animals and balloons were there Wednesday night.
Julian was the son of Jennifer Hudson's sister, Julia Hudson, who police said found one of the bodies Friday and called police.
William Balfour, 27, who is Julian's stepfather and Julia Hudson's estranged husband, was detained Friday for questioning in connection with the slayings, a police representative said.
Balfour has refused to take a polygraph test, The Associated Press reported Thursday, citing an unnamed source who the news agency said is familiar with the Hudson investigation.
Balfour has been transferred to state custody for a parole violation. He spent nearly seven years in prison for attempted murder, carjacking and possession of a stolen vehicle and was released in May. Police have so far refused to discuss precisely how he violated parole.
Authorities have told CNN only that Balfour's parole violation was of a "technical" nature, which could range from a curfew violation to missing an appointment with a parole officer. WLS reported that Balfour missed an appointment with his parole agent Friday. The agent phoned Balfour, who told the agent he was baby-sitting, the station said.
Balfour violated his parole by possessing a weapon and by failing to attend an anger management class and a substance abuse program, according to WLS.
Balfour also was arrested in June on suspicion of drug possession, officials said, but there was not enough evidence to constitute a parole violation. WLS reported that cocaine was found in Balfour's car.
On Tuesday night, Balfour's mother, Michele Davis-Balfour, told CNN's Nancy Grace her son had nothing to do with the slayings.
"My son's alibi was [he was] with one of his girlfriends, OK?" Davis-Balfour said.
When Grace asked which girlfriend he was with Friday, the mother said her son was with a woman named Diana on Friday night, and with a woman named Kate on Saturday morning.
A Tuesday autopsy report revealed Julian had been shot multiple times, but the Cook County medical examiner's report did not say when the child died or where his wounds were.
On Julia Hudson's MySpace page Monday afternoon, she wrote: "Now because I chose to do what was natural to me and love someone, it cost me my beautiful family, my wonderful beautiful loving supporting mother, Darnell, my true blue baby brother, Jason, I love u big baby ... and last but never not least, my only son, Julian."
Davis-Balfour disputed that her son and Julia Hudson had a rocky relationship. Grace asked if the two were "romantically" involved, and Balfour answered that they were. She said Julia Hudson and her son were together Thursday night after she invited Balfour to celebrate her birthday by having cake.