The Brief Seattle Mayor Katie Wilson appointed Deputy Chief Andre Sayles as interim police chief to lead the department while the city searches for a permanent leader. Deputy Chief Yvonne Underwood, who joined the department in 1997, will assist Sayles in leading the command staffSeattle Mayor Katie Wilson appointed Andre Sayles as the interim chief of police to lead the department during the city's search for a permanent chief. Seattle Mayor Katie Wilson (left) and Andre Sayles (center) during a Friday press conference announcing Sayles' appointment as interim police chief. (FOX 13 Seattle)New Leadership at Seattle Police DepartmentWhat we know:On Friday, Wilson introduced Sayles to lead the Seattle Police Department as interim chief during Friday morning news conference. The Source: Information in this story came from a news conference with Seattle Mayor Katie Wilson and interim Seattle Police Department Chief Andrew Sayles, and original reporting by FOX 13 Seattle.