Jumpei Yasuda is believed to have been taken captive by the extremist group Nusra Front, which has a history of holding foreign hostages for ransom.
Link: https://www.nytimes.com/2018/07/06/world/asia/japanese-journalist-jumpei-yasuda.html
Jumpei Yasuda, a freelance reporter who often covered war zones, disappeared after traveling to Syria from Turkey in 2015, intending to cover the Syrian civil war. He was believed to have been taken hostage by the Nusra Front, which now calls itself Hay’at Tahrir al-Sham, a group known to capture foreigners for ransom.