An off-duty South Windsor police officer has died following injuries from an assault at a South Carolina bar.

Authorities say 41-year-old Matthew Mainieri died from head injuries shortly after 3:00pm on Sunday. Maineri was at a bar in Murrells Inlet, South Carolina when he was assaulted.

South Carolina deputies have charged Kelton Jess Todd, 21 of Aynor South Carolina, with assault. Further charges are pending as the investigation remains ongoing.

This is a developing story. Stay with News 8 for any updates.