The IDF has cleared for publication that Sergeant Oz Shmuel Aradi , 19, from Kibbutz Hatzor, fell in battle in the southern Gaza Strip. In addition, three soldiers were injured in battle in the southern Gaza Strip and one soldier was seriously injured in battle in the northern Gaza Strip. A senior US official told reporters in a briefing on Thursday night that Hamas leader Yahya Sinwar’s days “are numbered”. “He has American blood on his hands and he is holding American hostages. I think it’s safe to say it doesn’t matter how long it takes…justice will be served,” the official said. Related articles: Rabbi whose two sons fell in 10.7 battles to light torch 'My daughter deserves to be buried in military cemetery' G'haleb Sliman Alnasasra from Rahat fell in battle in Gaza Leftist activists block bereaved father The IDF on Thursday distributed flyers in Gaza , promising a financial reward of $100,000 or more to anyone who brings reliable information regarding the locations of Hamas leaders. The IDF will pay a sum of $400,000 for information leading to the location of Sinwar, the flyer said, and $300,000 for help in locating his brother Mahmoud.