Three people, including two children, were killed in a Saturday morning house fire in Essex County, authorities confirmed. The fire broke out on Liberty Street in West Orange around 11 a.m. Saturday, the Essex County Prosecutor’s Office said in a statement. Firefighters found a small fire in the kitchen and heavy smoke in the rest of the home, officials said. All three people were unresponsive when firefighters arrived, authorities added. All were pronounced dead at the scene. Assemblywoman Rosaura “Rosy” Bagolie (D-District 27) wrote on X, formerly known as Twitter, that she was “deeply sadde…