Police issue CCTV appeal in Sabina Nessa killing, as mourners gather to remember teacher

A 38-year-old man has been arrested on suspicion of the murder of Sabina Nessa, an elementary school teacher from London, as detectives released images of another man they are searching for in connection with her death.A 38-year-old man has been arrested on suspicion of the murder of Sabina Nessa, an elementary school teacher from London, as detectives released images of another man they are searching for in connection with her death.