Simon Collins, 37, was arrested over the weekend in Wiltshire, England, for the possession and supply of illegal narcotics. He is currently out on bail.
“A 37-year-old man from [the town of] Devizes has been arrested for being concerned in the supply of Class A drugs and for possession of a Class B controlled drug. The bail will run until the end of August,” a spokesperson for Wiltshire Police confirmed to PEOPLE.
Simon, who is Lily’s half-brother, is a musician like his father – he sings and plays drums for the rock band Sound of Contact.
His mother, Andrea Bertorelli, was Phil Collins’s first wife. The pair were married from 1975-1980. Lily Collins’s mother, Jill Tavelman, was the Genesis singer’s second wife, and they were married between 1984-1996.
A rep for Phil Collins told PEOPLE that he is unwilling to comment on the matter.