Mexico ? A 14-year-old boy was detained after allegedly killing a 4-year-old girl because her father made fun of his acne, prosecutors said Monday.

Yurani Yuliec Garcia Organes was killed March 16 in the Pacific resort town of Zihuatanejo, where the victim and her father lived just a few yards from the boy’s house.

Authorities said the boy, who was detained Saturday, told police the girl’s father had called him “graniento,” or “zit-face.”

“He acknowledged having taken the girl’s life out of resentment he felt toward the girl’s father … because he made fun of the problem he has with acne,” said Guerrero state prosecutor Loyo Malabar.

Loyo Malabar said the boy wrapped the body in plastic bags and hid it in his house for two days before dumping it outside the girl’s grandparents’ home, where it was found the next day.

The victim’s father denied he made fun of the boy, and said he had only recommended an ointment he could use to reduce his acne problem.