A 26-year-old man has been arrested just days after three women were killed on Tuesday. The man was arrested after police launched a mass search for the suspect on Wednesday. He was being treated for injuries in hospital and remains in a serious condition. Hertfordshire Police confirmed the 26-year-old was arrested on Thursday evening on suspicion of three counts of murder. Detective Superintendent Rob Hall, from the Bedfordshire, Cambridgeshire and Hertfordshire Major Crime Unit, said: “Our thoughts remain with the victims’ family at this tragic time. “The investigation is moving at pace and …