1) Murder scene; 2) mother’s house; 3) hammer found; 4) arrest made

UPDATE 8:35PM: Charges filed. Info HERE.

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12-year-old Alexis Stubbs was stabbed and beaten to death with a hammer in her home during a “domestic altercation” in Uptown Sunday night, police said.

A hulking 31-year-old offender, currently on parole for aggravated domestic violence-strangulation, is in custody.

Police responded to a second-floor apartment in the 4600 block of North Beacon around 9:45 p.m. after receiving reports of a domestic altercation in progress.

Arriving officers found the girl bleeding profusely and a knife nearby. She was taken to Advocate Illinois Masonic Medical Center where she was pronounced dead around 11 p.m.

The girl was killed on the second floor of this building in the 4600 block of North Beacon, police said | Google

The offender, covered in blood, fled to his mother’s nearby apartment building where witnesses heard residents shouting, “Let him in! Let him in! The police are chasing him!”

But his mother was not home, and he ran from the building when residents, incorrectly believing he had been shot, started calling 911.

Police scoured the area for hours, finding a bloody hammer in the alley near 4656 North Malden.

pic.twitter.com/zuuEaw1dTM 4500 N Dover, in the alley, one in custody in connection with the stabbing death of a 13-year-old girl. #chicago — Peter Nickeas (@PeterNickeas) June 12, 2017

After midnight, a power outage hit the neighborhood, hampering search efforts and preventing investigators from viewing surveillance systems, residents said.

Finally, around 3 a.m., the suspect began calling relatives and cops tracked him down by systematically following cell phone pings.

They found him—6’4” tall and well over 250 pounds—in the alley of the 4500 block of North Dover at 3:14 a.m.

His t-shirt, soaked with the girl’s blood, was lying nearby.

CWBChicago is withholding the man’s name until charges are finalized. He was paroled in April after serving a three-year sentence for aggravated domestic battery-strangulation, according to state records.