Maryland police say six students at two high schools have reported feeling sick after eating spiked brownies last week.

News outlets report one of the students at the Charles H. Flowers High School was hospitalized and three others were assessed after eating brownies that may have contained synthetic marijuana. Prince George's County Police are investigating this incident, which happened on Friday April 20, also known as "4/20," a day celebrated in cannabis culture.

WTOP reports that two days earlier, a 15-year-old Maryland girl was charged with selling brownies that may have contained THC/CBG, a component of marijuana. The St. Mary's County Sheriff's Office said those brownies caused two students at Great Mills High School to be hospitalized.