JACKSONVILLE, Fla. -

Paramedics and police responded to reports of multiple people shot outside an Arlington nightclub late Saturday night, and a woman said her 14-year-old grandson was killed by the gunfire.

According to Jacksonville Fire-Rescue Division's John Bracey, rescuers responded around 11:30 p.m. to University Boulevard and Arlington Road, near Club Menage. Crews took one person to Shands Jacksonville Medical Center with life-threatening injuries, and another to the same hospital in serious condition.

Police said a third person was treated and released at the scene.

Homicide detectives with the Jacksonville Sheriff's Office were investigating late into the night. Investigators said some kind of altercation happened outside of the club and ended up in a nearby Walgreen's Drug Store parking lot.

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A woman who said she is a family member of one of the victims told Channel 4 that 14-year-old Horace Lee James died in the shooting. The woman said the teen was shot after leaving the club, but she did not know the motive or who the shooter was. James was an 8th grader at Arlington Middle School, according to the family.

The family member said the boy was a very good person and was supposed to have been at the movies. According to the woman, two girls were also shot at the same time.

According to a website about Club Menage, the nightspot holds a teen party for 13- to 18-year-olds on Saturday nights.

Anyone with information is asked to call Crime Stoppers at 866-845-TIPS (8477). Callers can remain anonymous and are eligible for a cash reward.