Associated Press: A pregnant American tourist was killed Wednesday after she was abducted during a morning jog. Stuffed into the trunk of a car, she made a desperate call for help. About an hour later, she was found dead with her throat slashed.

Based on 35-year-old Sara Kuszak's description of her kidnapper's car, police arrested a local man whose clothing was covered with blood. He was not immediately charged.

"He saw the woman and kidnapped her," said Lt. Angel Ocasio. "He didn't take anything. He stole her life."

The man was located because the FBI picked up a signal from the victim's cell phone, which he was carrying, investigating officer Arsenio Rodriguez said. Kuszak's fiance had called the FBI, but the department turned the case over to local police.

The suspect told police that he was covered with blood because his brother owns horses and one of them had been cut, Rodriguez said.

Kuszak, who moved to Savannah, Georgia, from San Francisco about five years ago, arrived Tuesday night in Puerto Rico, where she met up with her fiance and several friends.

"She was looking forward to the rest of her life with her fiance and her unborn baby," her friend Matt Daniel said in a phone interview from Georgia. "I'm just devastated. I don't know who would do something like that."

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