A Colorado woman has been cited by police after a container of what appeared to be urine blew up as she was heating it up in a microwave at a 7-Eleven.

Police say the incident occurred in the convenience store chain’s Aurora location last week when the clerk heard a loud bang and saw 26-year-old Angelique Sanchez take a white plastic bottle out of the microwave.

A police report says when confronted by the clerk, Sanchez wiped a yellow liquid that smelled like urine onto the floor and walked out.

Police located Sanchez at a nearby clinic where she had planned to take a urinalysis test for a potential employer.