Police have launched an investigation after Stoke manager Nathan Jones allegedly received death threats.
Hertfordshire Police say the malicious communications sent to Stoke manager Nathan Jones involved messages and calls.
Jones left Sky Bet League One Luton Town on January 9 to become manager of Championship club Stoke, after leading the Hatters to contention for promotion to the second tier this season.
"We can confirm police are investigating following reports that a man in his 40s has received malicious communications," Herts Police confirmed in a statement.
After leaving, Jones said he hoped Luton understood his motive for moving on and he believed he had a good rapport with the club's supporters.
Jones said: "I had a great rapport with fans of Luton. I gave them everything, gave them my life. I think I significantly improved the whole football club, the environment, the playing style, the assets.
"I united the club, it's a full house every week. I couldn't have left it in a better position. I understand there is going to be a certain heartache. The amount of times I've cried from text messages from players already.
"I was married to the club but this is a natural progression for me - the right step. I hope they understand. I don't think I've left them in the lurch. We've improved everything."
Jones' Stoke are 15th in the Sky Bet Championship after a difficult start to life in the West Midlands, while Luton have continued to prosper since his departure and are six points clear at the top of League One.