(KTLA) — A child tested positive for fentanyl after ingesting mystery pills that were reportedly found at a daycare in Victorville, California. 

On March 18, San Bernardino County deputies responded to La Petite Academy after reports that blue pills were found in a classroom.

Workers collected the caplets and immediately called law enforcement. 

Authorities recognized the pills with “M30” printed on them as possible counterfeit pills containing fentanyl.

After reviewing surveillance footage, deputies identified three children who appeared to have ingested the pills. 

The children, along with two staff members, were treated at local hospitals where at least one child tested positive for fentanyl.

It’s unknown how the pills arrived at the facility, and authorities were gathering evidence and interviewing staff and parents for more information.

No further details were released as the incident remains under investigation.

In the United States, fentanyl is blamed for tens of thousands of overdose deaths every year.

The average prison sentence for those convicted of trafficking fentanyl-related drugs was seven years and three months in 2023, according to the U.S. Sentencing Commission.

The Associated Press contributed to this report.