MERRITT ISLAND, Fla. — A fatal shooting at a Merritt Island Walmart Sunday appears to be over a relationship dispute, according to Brevard County Sheriff’s Office.

The shooting happened right after 8:30 p.m. Sunday at a Walmart at 1500 East Merritt Island Causeway.

Deputies say Shawn Robbins, 27, traveled to the Walmart to confront Rashad Gibson, 27, who worked at the store. Deputies say the dispute was in reference to an "unidentified third party." 

Deputies say that the confrontation culminated in Gibson shooting Robbins. 

Gibson has been cooperating with the investigation, according to the sheriff's office, and no arrests have been made yet.

The investigation ongoing right now. Deputies are not saying what the relationship dispute was about exactly.