Update: Neighbors and those who knew 34 year-old Dustin Minarik well are still trying come to grips with what happened.
A family friend told First Coast News off camera she believes Minarik died saving his girlfriend's life.
"He was like a father to me," De'Borah Dickerson, a 14-year-old former neighbor, said.
Dickerson said she knew Minarik well.
"He would've given the shirt off his back if you needed it," she recalled.
On Sunday afternoon, police were still working the scene where Minarik was shot.
"Wow, I cannot believe this happened to him. He was just an innocent bystander," Dickerson said.
Who shot Minarik, and why, is not yet clear.
Police said there was a house party going on across the street. But police said Minarik didn't attend the party nor did he appear to have an altercation with anyone at the party.
A family friend told FCN's David Williams off camera that Minarik heard a gunshot, threw himself over his girlfriend to protect her and took the bullet that would've hit her.
"He turned around, shielded her and they shot him in his back," the friend said.
Minarik died at the hospital. Neighbor Gilbert Remogat was awakened by gunfire and said he heard a woman scream for help.
"I was shocked, I was surprised," he said. "This is the first time happened in this area."
Dickerson said she'll never forget Minarik's last words to her.
"Don't ever stop being you," she said. "And he was like 'make sure you stay strong.'"
A family friend tells FCN that Minarik leaves behind three children ages 7, 9 and 12.
Police are asking anyone has information or if you were at the house party to call JSO at (904) 630-0500 or email JSOCrimeTips@jaxsheriff.org. You can also call Crime Stoppers anonymously at 1-866-845-TIPS.
Update: The victim, 34-year-old Dustin Joseph Minarik, died Sunday after being shot outside of a house party.
According to the Jacksonville Sheriff's Office, Minarik is a neighbor of the individual who was hosting the party.
He was in his driveway preparing to move his vehicle when he was shot, according to JSO, and was not attending the party.
According to JSO, Minarik did not appear to have an altercation with any of the people at the party.
JSO is asking people from the house party at 3024 Kline Road East to call JSO or Crime Stoppers and provide tips with information about the shooter.
Anyone who has any information about this shooting is asked to contact the Jacksonville Sheriff's Office at 904-630-0500 or email at JSOCrimeTips@jaxsheriff.org.
JACKSONVILLE, Fla. -- A man was shot Saturday outside of a house party on the Southside.
The man is in critical condition at UF Health, according to the Jacksonville Sheriff's Office.
A JSO investigation revealed the victim, a man in his 30's, was near a large crowd outside a home in the 3000 block of Kline Road just after midnight when he was shot.
The victim was not identified by JSO.
Anyone with information about the shooting is asked to call JSO.