By Staff

RICHLAND HILLS, Texas ( – A 12-year-old Richland Hills girl has died after a fentanyl overdose, and police said they’re investigating the death.

Elliana Martinez was found dead at a home on Jennifer Drive on May 31, according to the Tarrant County Medical Examiner.

READ MORE: 19-Year-Old Tello Hernandez Faces Intoxication Manslaughter Charge Following Fatal Crash 

The agency lists her cause of death as fentanyl toxicity.

READ MORE: Homeowner Terry Duane Turner Charged In Slaying Of Motorist Adil Dghoughi In His Driveway

Richland Hills Police Captain Sheena McEachran tells CBSDFW the case is still under investigation, and officers will not be releasing any additional details.

She did say police have not made any arrests.

MORE NEWS: Dallas Neighborhood Crime Spike Has Many Questioning, 'Is Uptown Going Downhill?' Staff