Jonathan Martin-Instagram Post

Jonathan Martin-Instagram Post

Jonathan Martin, who played three seasons in the National Football League as an offensive lineman, was taken into custody for an ominous post to his private Instagram account, Matt Stone of ABC News reported.

"The post was captioned, 'When you're a bully victim & a coward, your options are suicide, or revenge".

The post forced Harvard-Westlake School, a prominent private school in the Los Angeles area that Martin once attended, shut down today after a security threat, according to CBS Los Angeles.

Law enforcement tells TMZ Sports.

Social media has been mixed in response with posts ranging from sad and hopeful that he will get help to those who not only do not support Martin but claiming he is simply trying to milk more money out of his previous situation.

The NFL player at the center of the Dolphins' bullying controversy appears to have used social media to threaten two of his former teammates.

Incognito was suspended midway through the 2013 and never played a down for the Dolphins again.

Martin, a former second round pick of the Miami Dolphins, shared the following Instagram story on Friday.

Martin, who previously revealed he tried to commit suicide multiple times while in the NFL, was the victim in a bullying scandal that rocked the league. He also listed his former high school, Harvey Westlake.

The official says Martin was being questioned and was not under arrest Friday afternoon.

Miami Dolphins tackle Jonathan Martin (71) at Gillette Stadium in Foxboro, Massachusetts on October 27, 2013.

One source at Harvard-Westlake said Martin has been detained over the incident, though police said there was "no credible threat" against students.

The current Buffalo Bills player also joked about "running a train" on Martin's sister, and made other crude remarks about her.

It remains to be seen what, if any, sort of action will be taken against Martin but it is clear he is unwell.