An investigation is underway after a premature baby was found in southeast Houston Friday and later died, police said.

SAN ANGELO, Texas – A 2-month-old girl who tested positive for heroin after being found unresponsive with injection marks at a West Texas home over the weekend has died, police said Thursday. San Angelo police said Brixlee Marie Lee died Tuesday at Cook Children's Medical Center in Fort Worth. Police said Thursday that officers rushed Brixlee to a San Angelo hospital Saturday after responding to a report of an unconscious infant. Hospital staff found injection marks on her extremities and head, and her urine tested positive for heroin, police said. Harbor and Smock remained in Tom Green County Jail on Thursday.