In a tragic incident in San Antonio, Texas, a 21-year-old man opened fire at a landscape supply company, resulting in the deaths of three co-workers before turning the gun on himself, authorities confirmed on Sunday.

The victims, two men and a woman, were fatally wounded during the shooting that took place Saturday morning at the business located on the city’s north side, according to the San Antonio Police Department.

The chaos unfolded around 8 a.m., as reported by KSAT-TV, prompting other employees to flee the scene in panic as shots were fired.