Police have made an arrest in the murder of Jessica Nguyen, the 12-year-old Gaithersburg girl found dead in the basement of her home in May. Montgomery County police on Tuesday arrested her stepfather, 43-year-old David Rich Hang of Gaithersburg, on a warrant for first-degree murder, according to a statement from police.
Jessica's body was discovered May 31 after police responded to her home on Raven Avenue. Her death was ruled a homicide caused by stab and cutting wounds.
On Wednesday, police disclosed that the key piece of evidence for identifying Hang was a sample of blood taken from a knife sheath at the scene of the murder. Tests revealed that DNA in the sample matched a swab from Mr. Hang taken by investigators. That knife is believed to be the one used to kill young Jessica Nguyen. Police also found a boot print matching Mr. Hang's size near the scene of the crime.
Despite the apparent evidence, neither police nor prosecutors have identified a motive in the case. Court records indicated Hang and Nguyen's mother were in the middle of a contested divorce.
On Wednesday afternoon, District Court Judge Patricia Mitchell denied bail for Hang.
A preliminary hearing is scheduled for next month