HAYWARD — A resident was arrested and charged with drug and gun possession after a police officer noticed a video on the suspect’s Instagram account of a man shooting a gun in the air.

The 29-year-old Hayward resident was charged with three counts of alleged drug dealing and four counts of possessing a machine gun. He was released from jail on the condition that he not possess weapons and obey all laws, according to court records.

Police began investigating the man in mid-September, when an officer noticed a video on an Instagram story of a man firing a gun in the air. The gun appeared to be a Glock pistol, modified to shoot fully automatic, authorities said. When police identified the man as the Instagram account holder, they raided his home on Veronica Avenue.

Authorities say that during the raid, police seized more than 800 Xanax pills, more than an ounce of cocaine, about four grams of MDMA, a 3D printer and equipment used to make pistols fully automatic. The man reportedly told police that modifying pistols was “fun,” and he didn’t know it was against the law.