Turkish authorities concluded that 33-year-old Sarai Sierra was killed with a blow to the head.

WSJ: Body of NYC woman killed in Turkey to return to US

Sarai Sierra, a 33-year-old mother of two, went missing while vacationing alone in Istanbul.

WSJ: Report: Man released in Turkey missing woman case

Sarai Sierra, a 33-year-old mother of two, went missing Jan. 21 while on a solo vacation in Istanbul.

WSJ: Turkish police seek clues in NYC woman's death

Sarai Sierra, a 33-year-old mother of two, was last heard from Jan. 21, the day she was to fly home.

WSJ: Body of Vacationing New York Woman Found in Turkey

The suspect, identified by authorities only as Ziya T, had been on the run since the body of Sarai Sierra, a 33-year-old mother of two boys, was discovered last month.

WSJ: Turkey: Man detained over NYC woman's death