Police pursuing the killer of five prostitutes arrested a second suspect on Tuesday and seized a car that a neighbor said the suspect had been constantly cleaning. A court gave police permission to hold the first suspect, who was arrested Monday, for an additional 36 hours while officers scoured his back yard on hands and knees for possible clues. Detective Chief Superintendent Stewart Gull said both men were suspects in the murders of Tania Nicol, Anneli Alderton, Paula Clennell, Gemma Adams and Annette Nicholls. Their naked bodies were found dumped in rural areas of eastern England around Ipswich, 70 miles (110 kilometers) northeast of London, in a 10-day period beginning Dec. 2. Police have said the first suspect, a 37-year-old man, was arrested Monday in a village outside Ipswich and the second, a 48-year-old man who lived in the town's red-light district, was taken into custody Tuesday. Neither man has been charged or formally identified.