Authorities added to their haul from a synthetic marijuana bust on Tuesday when an ill-timed delivery showed up at one of the seven targeted smoke shops during a raid.

Detectives with the Baker Police Department and Delta Narcotics Task Force were searching Mr. Happy’s Novelty Shop, 14424 Plank Road, Baker, when a parcel delivery company dropped off a box with 1,500 packets of synthetic marijuana, police said.

The store’s owners, Dustin Graham and Justin Marcantel, were arrested at the scene, East Baton Rouge Sheriff’s Office spokeswoman Casey Rayborn Hicks said in a release. Agents also confiscated from their house $4,846 and 21 guns, including assault rifles, high-powered shotguns and multiple pistols, Hicks said.

The other shops that were raided Tuesday are High Times, Paradise Smoke Shop, Blue Dragon, Maliboo Smoke Shop, Good Times Smoke Shop and Novelty Shop.