Police tonight asked for help finding a teenager who has gone missing for a third time.Nolldre Brown, 16, was last seen at the bus depot in St George’s on Friday at about 9.25pm.He is black, about 5ft 8in, slim and with little facial hair.He was last seen wearing black long pants and a black T-shirt with a facial print on the front.Nolldre was previously reported missing on April 12, but returned home safely, in good health, the same evening.He went missing again last Tuesday night, before police announced he was found safe and well on Thursday.Anyone with information should call police on 295-0011.