A Columbus, Ga. man pleaded guilty on Wednesday to threatening the life of a California-based porn star via social media.

Brian Blankenship, who goes by the online name "Joe Cook," pleaded guilty in the Middle District of Georgia to transmitting in interstate commerce a communication threatening to injure an identified individual, court records show.

He will remain in jail until a April 12 sentencing hearing.

The Federal Bureau of Investigation says Blankenship used Periscope, a social media application, to stream live videos on Aug. 27 that contained threatens to porn actress Malena Morgan.

The threats referenced the on-air murders of two Virginia television news employees that occurred the previous day, an affidavit filed on Oct. 9 states.

In the videos, Blankenship said he would use Periscope to broadcast live when he was "opening fire on Malena Morgan" and he also promised to "end Malena Morgan's life."

Morgan reported the Periscope threats and more than 12 threatening emails to Beverly Hills police on Sept. 1.

In the emails, Blankenship made such statements as "when you walk out of your house and see me it will be to (sic) late" and "as soon as I have a clear shot when I see you," according to court records.

Blankenship also allegedly told Morgan via email that he posted a female's address online in 2008, and she was shot leaving her New York City apartment. Blankenship told Morgan that the same would happen to her.

Beverly Hills police turned the case over to the FBI who located Blankenship in Columbus. He was arrested in October.