SALINAS, Calif. -

A 35-year-old San Leandro man who forced a runaway teen into prostitution pleaded no contest in Monterey County Superior Court Tuesday to making terroristic threats.

That's in addition to Lavester Pierson's April conviction for human trafficking and pandering.

Pierson was sentenced to nine years in state prison and was also fined $50,000 for the human trafficking conviction.

His co-defendant,  Lisa Banner (aka Aaliyah Person,) previously was sentenced to 10 years and eight months in state prison for pandering, human trafficking and kidnapping.

Both Pierson and Banner will have to register as sex offenders for life. 

Prosecutors said the pair forced a runaway teenager from the Livermore area into prostitution in February 2012 and was "supervised" locally by Banner in Monterey County. The victim has since been reunited with her family.