Detectives in Florida are investigating what led two British holidaymakers, including a Warwickshire tennis coach, from a night out in the centre of Sarasota to the deprived, crime-ridden district where they were shot dead.
The bullet-ridden bodies of James Cooper, 25, from Warwick, and James Kouzaris, 24, from Northampton, were discovered on a street in the city's run-down district of Newtown at about 3am on Saturday.
Detectives from Sarasota Police Department said it was "very unusual" to find tourists in the neighbourhood - a housing project about 12 miles away from the upmarket island city of Longboat Key where the university friends were staying.
Shawn Tyson, a 16-year-old who lives close to the murder scene, is being held by police on suspicion of two counts of murder.
The teenager had been previously arrested on April 7 for aggravated assault with a handgun, reportedly for firing into a car, police said.
Mr Kouzaris was on a three-week holiday in Florida with Mr Cooper and his family.
The pair had been on a night out visiting bars in downtown Sarasota on the Friday evening, before being found dead hours later in a narrow one-way street 20 blocks away.
Captain Paul Sutton said detectives were "examining all theories" and "keeping an open mind" as to how and why the friends came to be in the "no-go" area.
Mr Cooper also represented Warwickshire at tennis and had played Andy Murray at junior level.
Friend and former coach James Roe, from Kenilworth Tennis, Squash and Croquet Club, described the circumstances surrounding his death as “bizarre”.
He said: “It is very tragic. None of us are sure of the ins and outs of what went on and how he came to be in that situation.
"We know how he died, but why he died is what we want to know.
“For somebody to die in that manner, to be murdered, to be shot, it is just bizarre.”
Mr Cooper decided to take a holiday in Florida because he did not have much coaching work over Easter.
Capt Sutton said there was no known link between the suspect and the victims. Police confirmed the two Britons were not carrying any drugs but would not say whether they had any weapons or an unusually large amount of money.
Capt Sutton said Tyson had not yet been charged, but should be within 21 days. He added that the teenager would be charged as an adult, which means he could face the death penalty if convicted.
Mr Cooper studied at Sheffield University's management school before becoming a full-time tennis coach for Inspire2coach, based at the University of Warwick.
He had just been promoted to a head coach position and was due to start his new role after returning from holiday.