Beltrán, who was with the Astros at the time, was named as one of the players in the report. But he was not expected to be disciplined by league officials.
"(Beltrán) discussed that the team could improve on decoding opposing teams' signs and communicating the signs to the batter," the report said.
Beltrán retired as a player in 2017 after winning the World Series with the Astros. He then worked in the Yankees front office for a year before the Mets hired him in November.
“I’m grateful to them for giving me the opportunity, but we agreed this decision is in the best interest of the team,” Beltrán said in a statement. “ I couldn’t let myself be a distraction for the team. I wish the entire organization success in the future.”
Astros' manager AJ Hinch and general manager Jeff Luhnow were both relieved of their duties with Houston shortly after MLB levied yearlong suspensions to the pair.
The Boston Red Sox and manager Alex Cora also agreed to mutually part ways Tuesday.
Cora was not punished by the league because MLB decided to release his discipline after they had conducted an investigation into allegations that the Red Sox were electronically stealing signs during their 2018 regular season.