Celebrity hairstylist Jesus Guerrero, who worked with stars such as Kylie Jenner and Jennifer Lopez, battled an illness months before he died at age 34.

The family of Jesus Guerrero revealed new health details following the celebrity hairstylist’s mysterious death in February. “He was diagnosed with gastritis months back, but it was never anything to get that bad,” his sister, Gris Guerrero, told Us Weekly Monday. “So we don’t know if that was a part of it.”

Celebrity hairstylist Jesus Guerrero died in February at the age of 34 but the cause of death is still unknown