Jun 12, 2016 1 min read

The National Pro Fastpitch softball league canceled post game autograph sessions until further notice because of threats made to players and staff on social media.

Commissioner Cheri Kempf told the Associated Press the move came after “the same general threat” was made on various social media platforms. Kempf said the threats were made by “one particular person” and the league is working with law enforcement to resolve the issue.

Postgame autograph sessions are required by the league and take place for 45 minutes after every NPF game. All players, from both home and visiting teams, attend.

The league said in a statement it is discussing alternative ways to interact with fans while ensuring player safety.

“The autograph sessions are a big deal. It’s kind of what people love about the league,” Kempf said. “The fans are closer to the action (than baseball), and our players are very interactive with the audience, particularly postgame.”

The league canceled signing sessions at Consel Energy Park in Washington, Akron, Ohio, and Conroe, Texas on Saturday.

The NPF, previously known as the WPSL, began play in 1997. It has six teams, including clubs in Dallas, Chicago and Kissimmee, Fla.