A Mississippi woman has lost her job after celebrating the murders of two police officers on Twitter Sunday night.

Sierra McCurdy, a Subway fast food worker, who celebrated Saturday’s killing of two Hattiesburg, Mississippi, police officers, has been fired.

“We can turn this bxtch into Baltimore real quick…. Police take away innocent people lives everyday now & get away w/ it, fxck them… no mercy,” Ms McCurdy wrote on Facebook.

"Two police officers shot tonight in Hattiesburg. GOT EM," she wrote in another post.

Ms McCurdy’s posts made their way to Twitter where users called for her firing, questioning Subway’s ethics and morals.

Subway eventually released a statement saying Ms McCurdy’s Facebook posts had cost resulted in her firing.

“This kind of behaviour is unacceptable and does not represent the values and ethics of our brand,” a Subway spokesperson said. “The franchisee has terminated the employee, effective immediately.”

Four suspects have been arrested in the fatal shootings of officers Benjamin Deen, 34, and Liquori Tate, 24, who were making a traffic stop Saturday evening when they were shot and pronounced dead when arriving to a hospital.