"The married New York mother who was murdered while on a solo trip to Turkey was reportedly seen with a mystery man twice before her death - including the day she was supposed to fly home, it was revealed today.".......
"Now a witness has told Istanbul police that he saw Sierra speaking to a different man outside the city's Sultanahmet Mosque on January 11, just days after she arrived in the country.
He handed her a card and as she left the mosque, she took a walk with him and four or five other men, the witness claimed, Turkish newspaper Milliyet reported.
Sierra flew to Amsterdam on January 15 and to Munich the next day, returning to Istanbul on January 19. The witness said he then saw Sierra talking with the same man on January 21 at Topkapi Palace - the day she was due to fly home, but she never boarded the flight."
http://www.dailymail.co.uk/news/article-2274977/Sarai-Sierra-New-York-mother-seen-second-mystery-man.html#axzz2JfuRYaMM