When Hamas’ military wing, the Qassam Brigades, released its propaganda video of three Israeli hostages being released Sunday night, there was a striking detail.

A Hamas official said on Monday the Palestinian militant group would next release hostages on Sunday, a day later than expected under a complex ceasefire accord reached this month with Israel.

Romi Gonen, Emily Damari and Doron Steinbrecher were freed from Gaza. Thirty more hostages are set to be released in exchange for hundreds of Palestinian prisoners.