Palestinians mourn outside the home of professor and Hamas member Fadi Mohammad al-Batsh, 35, who was killed early in the day in Malaysia, in town of Jabalia, northern Gaza strip, on April 21, 2018. Malaysian police said that the research scientist, who specialized in energy issues, was killed in a drive-by motorcycle shooting as he headed on foot to take part in dawn Muslim prayers on April 21 in Kuala Lumpur. Hamas accused Israel's Mossad spy agency of killing him. (Xinhua/Wissam Nassar)