Echosmith drummer Graham Sierota is apologizing for sending inappropriate messages to Travis Barker’s underage daughter, Alabama, claiming he didn't know her age.

Alabama took to her Instagram Story earlier this week to call out Sierota, writing on a screenshot of his alleged messages, "Hey guys! So once again I am bringing this to your attention because I’m a 13 year old girl and he is 21/20 super creepy."

View image on Twitter