SPRINGFIELD, VA — An MS-13 gang member was sentenced to over three decades in prison for the brutal stabbing of a 15-year-old girl from Gaithersburg.

Wilmer Sanchez Serrano was sentenced to 33 years in prison Friday for the death of Damaris Alexandra Reyes Rivas. He was found guilty of second-degree murder, abduction and gang participation.

Serrano is one of ten MS-13 gang members charged in the death. Reyes Rivas was killed in Lake Accotink Park in Springfield, Va. on Jan. 8, 2017, prosecutors said.

She was reported as a missing person in December 2017 and her body was found in February. She had previously told her mother gang members were threatening her. Reyes Rivas left her Gaithersburg home on Dec. 10, 2016 and was lured to the park, thinking she was going to smoke marijuana. Investigators believe Reyes Rivas was killed in retaliation for the gang-related murder of Christian Sosa Rivas, 21, whose body was found during January in Dumfries. Court documents show Reyes Rivas took blame for allegedly leading Sosa Rivas to his killers.

Reyes Rivas was taken to another park, beaten, and then stabbed 13 times, prosecutors say. The group reportedly threatened to cut off her fingers and set her on fire before they killed her as she stood freezing in the cold. Her killers recorded her last minutes on cell phone videos.

Sanchez admitted in court to stabbing the teen but said other gang members made him. During his trial, jurors and family members watched disturbing cell phone footage of Reyes Rivas being taunted and stabbed, NBC Washington reports.

"He purposefully impaled her with that stick over and over and over and over. This was not someone who was forced into participating," prosecutors said in closing arguments, NBC reports. Two more defendants have gone to trial and been convicted, while another awaits trial. Five suspects pleaded guilty and two others are expected to plead guilty, according to NBC.