Pava LaPere, the founder of EcoMap Technologies, was found dead in an apartment Monday. Police say they are looking for a suspect considered armed and dangerous.

In 2015, Billingsley was sentenced to 30 years in prison, with 16 years suspended, after he pleaded guilty to a first-degree sex offense, court records show.

The Maryland sex offender registry shows he was released from prison in October. The registry classified him in “tier 3,” which includes the most serious charges and requires offenders to register for life.