CHESAPEAKE, Va. – The Chesapeake Police Department is asking for the public’s help in locating 48-year-old Nelson Williams. Williams was last seen Saturday, Sept. 28, in the 4100 block of Reid Street in Chesapeake between 8 and 9 a.m., according to the Chesapeake Police Department. He has a diagnosed mental health condition and requires medication. He is also known to be combative when approached.