Local and state officials are investigating why hundreds of vials containing marijuana and marijuana residue were found in a dumpster outside of a marijuana testing laboratory in Massachusetts.

While on patrol late Sunday evening, a Framingham police officer saw a vehicle parked near dumpsters outside MCR Labs, a marijuana testing facility on Speen Street.

The officer found "hundreds of glass vials containing what appeared to be extracted marijuana or THC” in garbage bags, according to a police report reviewed by the MetroWest Daily News.

The bags were thrown into a dumpster that was not locked and easily accessible, police say.

The officer filed a report on the matter, which has been escalated by city officials. Framingham Mayor Yvonne Spicer has written a letter to the state Cannabis Control Commission seeking answers on the disposal methods.

MCR Labs is a registered independent cannabis testing laboratory, certified by the Department of Public Health to conduct testing of marijuana products in Massachusetts and Rhode Island.

Tested products include tinctures, cookies made with THC, CBD oil and multiple strains, according to the company’s website.