One teenager was killed and another seriously wounded in a Monday night shooting in the Albany Park neighborhood in which one of the bullets went through the window of a nearby restaurant.

Killed was Leon Deakyne, 17, of the 4500 block of North Whipple Street, according to the Cook County medical examiner's office.

The shooting happened outside a convenience store in the 3100 block of West Montrose Avenue at about 7:45 p.m., police said.

The two victims, a 17-year-old boy and a 16-year-old girl had just left the store with several "acquaintances" when a lone gunman approached on foot and fired several shots at the group, police said.

The gunfire struck the boy in the back and the girl in the buttocks, police said.

Deakyne was rushed to Advocate Illinois Masonic Medical Center, where he was pronounced dead, said police and the Cook County medical examiner's office.

The girl was also taken to Illinois Masonic, where she was listed in serious condition.

The gunman, described only as a man between 18 and 25 and wearing a tan coat and hooded sweatshirt, ran north on Troy Avenue, police said.

One of the bullets hit a window at a nearby restaurant, sending patrons and employees diving to the floor for protection, though no one inside was injured, according to an employee there.

Investigators didn't offer a motive, but noted that both victims were members of the La Familia Stones street gang.

This was the second fatal shooting in Albany Park since Sunday.

Grand Central Area detectives were continuing their investigation.

wlee@tribune.com

Twitter: @MidNoirCowboy