Matthew Casey

The Republic | azcentral.com

A 40-year-old man who shot a woman's ex-boyfriend in the chest after he responded to her pleas for help Monday night at a Scottsdale apartment complex will not face charges, according to Scottsdale police.

Scottsdale police Officer Kevin Watts declined to identify the 28-year-old ex-boyfriend on Wednesday, saying that he remained in serious condition at a Valley hospital.

The incident unfolded at about 11:30 p.m. at the Colonial Grand at Old Town Scottsdale apartment complex near 70th Street and Thomas Road, Watts said.

Watts said the ex-boyfriend broke into his 35-year-old ex-girlfriend's apartment and held her captive before she was able to escape.

As she fled, the woman knocked on doors and yelled for help. When a 40-year-old man came out of his apartment to help the woman, her ex-boyfriend attacked him, Watts said.

A brawl ensued inside the 40-year-old man's apartment, where Watts said the neighbor eventually shot the ex-boyfriend with a handgun.

The ex-boyfriend fled the apartment but later collapsed.

The investigation is ongoing.