Faced with new sexual assault charges, a former Progreso police officer surrendered to Hidalgo County Sheriff’s Office investigators Thursday.
Former Progreso police Officer Matthew Lee Sepulveda, 24, of San Juan surrendered to investigators Thursday morning.
The Sheriff’s Office arrested Sepulveda last week on charges of sexual assault and improper sexual activity with a person in custody. During the investigation, the Sheriff’s Office discovered two additional victims.
Investigators believe Sepulveda sexually assaulted a 17-year-old boy and attempted to sexually assault his 17-year-old twin brother, according to court records.
Sepulveda remained at the Hidalgo County jail Thursday and couldn’t be reached for comment.
The Sheriff’s Office determined that Progreso police detained 17-year-old twin brothers at about 4 a.m. on June 30.
“Investigators requested jail logs and police reports regarding the two males and none existed,” according to court records.
The Sheriff’s Office interviewed the twins.
One boy said that Sepulveda took him from the city jail to a nearby room. After telling the boy to masturbate, Sepulveda performed oral sex on the boy and showed him pornography, according to court records.
Sepulveda also removed the other boy from the city jail and asked “if he would be willing to do the same thing,” according to court records. The other brother refused.
Investigators charged Sepulveda with sexual assault, a second-degree felony; improper sexual activity with a person in custody, a state jail felony; and official oppression, a Class A misdemeanor.
Before he joined the police department, Sepulveda served as a sergeant at the Hidalgo County jail.