"Over the last few days our organization has continued to gather information in regards to the alleged incident involving Offensive Line Coach Aaron Kromer," the team said in a statement.
"We have been in regular discussions with the league office and have decided to place Aaron on indefinite paid administrative leave in accordance with the league's Personal Conduct Policy while we continue to work our way through the investigative process with the league."
Kromer and his son, Zachary, got into an altercation with his neighbor's son, a minor, in Inlet Beach, Florida, according to a Walton County Sheriff's Office police report released Monday.
According to the police report, Kromer confronted three boys over using their beach chairs left by a beach access. Kromer allegedly grabbed their fishing pole and threw it into the water. He then allegedly pushed one of the boys to the ground and punched him in the face before telling the boys to return the chairs.
The police report states that Kromer caused bodily harm to the victim's left eye. The Bills assistant allegedly threatened to kill the victim's family if he reported the incident.
The 48-year-old Kromer joined Rex Ryan's coaching staff in Buffalo after spending two seasons with the Chicago Bears as offensive coordinator. He first started in the NFL with the Tampa Bay Buccaneers in 2001. Kromer also spent time with the Oakland Raiders and New Orleans Saints, where he was interim head coach for six games in 2012.
Kurt Anderson is currently the Bills' assistant offensive line coach. Offensive coordinator Greg Roman also got his feet wet in the NFL as an offensive line assistant.