“AHH-MAZING!!! He’s here!!! My son was born today!!! @jamiasan is the absolute greatest ever!!! Xoxox (sic),” he wrote.
He added that the couple had named their son Miles.
“Thanks for all the congrats & well wishes! Mommy & baby are well. Miles spent his first day alive consistently p*ssed & devilishly handsome.” he posted.
In February, Iero promised that the band’s next album will have a “vision” saying that it won’t “just be a collection of songs”.