A 55-year-old man was critically injured with a gunshot wound to the left shoulder after an altercation at Oakdale and Halsted in Lakeview Thursday morning. View Full Caption DNAinfo/Ariel Cheung

LAKEVIEW — A man who shot and critically injured a 55-year-old man during a fight in Lakeview late Thursday morning has a concealed carry license and has been released by police, authorities said.

Around 10:55 a.m., the two men got into an argument at the corner of Oakdale Avenue and Halsted Street, when the other man produced a gun and fired multiple shots, said Officer Nicole Trainor, a Chicago police spokeswoman.

The 55-year-old man suffered a gunshot wound on the left side of his chest and was taken to Advocate Illinois Masonic Medical Center nearby, police said.

The 67-year-old alleged shooter called 911 and remained at the scene, said Ald. Tom Tunney (44th). The shooter has a concealed carry license and was questioned by police, before being released from custody, pending a police interview with the victim, said Chris Jessup, who handles public safety for Tunney's office.

An evidence marker rests in a blocked-off parking lot in the northwest corner of Halsted and Oakdale on Thursday morning following a fight that left a 55-year-old man in critical condition from a gunshot wound. View Full Caption DNAinfo/Ariel Cheung

No charges have been filed as of Friday afternoon, Jessup said. Area North detectives are investigating.

An officer on the scene said the fight was "personal" and the two men knew each other. A building manager said one of the men involved lived in his building nearby. One woman said the man got into "a tiff" with her son years ago.

"I told him to leave me alone," she said, declining to identify herself. "I wouldn't talk to him."

The anonymously run Crime in Wrigleyville + Boystown blog reported that a 911 call came from a man who said he shot an acquaintance after being attacked. A witness also called to report hearing a single gunshot and watching a man walk away from a person lying on the ground, the blog states.

The shooting took place just one block east of where Kevin O'Malley was shot to death during a 2 a.m. robbery in May. His alleged killer, Kristopher Pitts, was in court Jan. 19 for a status hearing and is set to return March 9. He is held without bail.

Neighbors are frustrated with what police called a "bad couple of months" during a Monday community policing meeting.

Two high-profile crimes in particular took place within a month of one another. Most recently, a 77-year-old woman was attacked during a "brutal" home invasion Jan. 9 in the 3600 block of North Magnolia Avenue.

The victim remained in intensive care for weeks, and police arrested the three men, who are facing decades in prison if found guilty. The three men have been tied to a "mini crew" that would burglarize the area regularly, said CAPS Sgt. Jason Clark.

Two additional men involved in the alleged ring are also "off the street now," Clark said Monday.

That same day, two other burglaries took place when people were home, police said at the meeting. The crime patterns "fit this crew," but it will take time for detectives to officially connect the cases.

In December, 78 shots rang out around 3 a.m. in Wrigleyville. A shootout between two groups resulted in one arrest. The tenants who threw the party that allegedly led to the shooting have since been evicted, with the assistance of Tunney's office.

Contributing: Erica Demarest

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