Aliquippa Police Sgt. Kenneth Watkins has returned to work.Watkins was placed on leave in May following the murder of Rachel DelTondo, who was shot outside of her family’s home in Aliquippa. Watkins was not placed on leave for disciplinary reasons but rather because he and his family were close friends with DelTondo. His return to work was confirmed by acting Aliquippa Police Chief Robert Sealock. DelTondo’s murder remains unsolved.