CBS News has learned the NFL is in the midst of an investigation into players’ jail time.

The investigation is separate from the probe into the NFL’s handling of domestic violence allegations against former player Colin Kaepernick, CBS News Chief Legal Analyst Jeffrey Toobin said Monday on “This Morning.”CBS News obtained an email that NFL commissioner Roger Goodell sent to the league’s executive committee last week that included the response he sent to a series of questions from CBS News about the league.

The email was obtained by CBS News through a public records request.

Goodell’s response was dated March 10, 2017.

The NFL’s response to CBS News questions about players’ imprisonment follows a series that the league released Monday that detailed the players’ cases against police and the NFLPA.

The league says the cases are still under investigation.

According to the NFL, there are at least 10 players currently in jail for alleged domestic violence.

The NFL says the players are not all being charged in the same case, which is not clear.

The most recent case was that of Packers cornerback Damarious Randall, who pleaded guilty to assaulting his girlfriend in March.

The charge stemmed from an incident at a Minnesota hotel where Randall allegedly tried to strangle her and beat her.

The Packers’ cornerback was released on a $2 million bond.