The United States is offering rewards of up to $20 million for information leading to the capture of four top Islamic State leaders.
They include Abu Mohammed al-Adnani, official spokesman for the group. The State Department calls him the "main conduit" for Islamic State messages, including those calling for attacks against Westerners.
The other three on the rewards list are Abd al-Rahman Mustafa al-Qaduli, a former Islamic State deputy leader; Tarkhan Tayumurazovich Batirashvili, who ran an Islamic State prison where foreign hostages may have been held; and Tariq Bin al-Tahar Bin al Falih al-Awni al-Harzi, whom the State Department calls one of Islamic State's first members and a fundraiser for the terrorists.
The money is being offered thorough the U.S. Rewards for Justice program, which has paid out more than $125 million for information on wanted terrorists since it began in 1984.