CHICAGO — Two men and a woman were seriously injured in an early-morning drive-by shooting on the South Side.

Chicago police say the shooting happened in the 100 block of East 47th Street, in Grand Boulevard, at around 4 a.m. on Sunday. 

The three victims, a 23-year-old woman, an 18-year-old man and a 30-year-old man were sitting inside a car at a stop light in the area when another vehicle appraised and someone inside opened fire. 

All three victims were hit by gunfire and were taken to the hospital in serious condition. 

Currently, it is unclear what led to the shooting and authorities say no arrests have been made. 

An investigation is now underway.

Anyone with information on the shooting is asked to contact CPD Area One detectives at 312-747-8380 or dial 911. 

Those with information that could help authorities in their investigation can also leave a tip at CPDtip.com. Tips can be filed anonymously.