The parents of a 2-year-old boy who got lost during the July 4 parade shooting in suburban Chicago are among the seven people who were killed, authorities said as friends and family mourned their lost loved ones.

Authorities in suburban Chicago have reunited a young boy with his grandparents after he was found alone in the aftermath of a mass shooting at a Fourth of July parade in Highland Park.

A picture was shared widely across social media on Monday showing the boy in attempts to connect him with his family.

The parents of a little boy who was found alone after a mass shooting at the Highland Park Independence Day parade were identified as two of the victims killed after a gunman opened fire on the crowd.

Community members rushed the little boy to safety, and cared for him while the search for his family started. 

His parents, Irina and Kevin McCarthy were residents of highland park, and were shot and killed during the parade on Monday.

Irina was 35 years old, and Kevin was 37 report says.

According to a GoFundMe account started by community members, their little boy is just 2 years old.

He was reunited with his grandparents on Monday, but is now left in an unimaginable position.

Forty-five people were injured or killed in the attack, which was thought to have been planned by the alleged gunman, Robert Crimo III, for several weeks.

On Tuesday, the Lake County Coroner's Office identified six of the seven victims who died in the attack, which included Irina and Kevin.

The seventh victim died at a hospital outside of Lake County.