DALLAS (CBSDFW.COM/AP) — Federal authorities say they have found about 72 pounds of heroin at a house in south Dallas.

Court documents filed Thursday say 39-year-old Juan Jose Ontanon-Espinoza faces a federal drug charge and was taken into custody after he gave more than 6 pounds of heroin to a confidential source for the Drug Enforcement Administration.

A woman injects herself with heroin. (credit: Mario Tama/Getty Images)

A DEA criminal investigator wrote in an affidavit that Ontanon-Espinoza’s girlfriend reported they lived together, but he maintained another residence in Dallas and agreed to show them its location.

The agent reports investigators found about 72 pounds of heroin at the house, along with mail addressed to Ontanon-Espinoza. His defense attorney did not immediately return a message seeking comment.

Sentencing is just around the corner for another North Texas who pleaded guilty to her role in selling the heroin that caused a young woman’s overdose death at a McDonald’s restaurant in Farmers Branch in June 2016.

Nancy Pineda, of Farmers Branch, pleaded guilty to one count of conspiracy to possess with the intent to distribute a controlled substance. Pineda has been in custody since the time of her arrest in October 2016. Sentencing is scheduled for January 11, 2018.