One person was dead, two others at large and the owner of a legal marijuana grow operation in police custody after an early morning shooting in Oakland’s Chinatown neighborhood, authorities said.

Oakland police Lt. Kevin Wiley told KTVU that officers responded to a 911 call about 4:45 to a location near the intersection of Webster and 7th streets in Oakland’s Chinatown.

“Officers responded to reports of gunfire,” he said. “Upon arrival, they found one man deceased… It appears to be a home invasion robbery.”

While investigators were still trying to piece together what happened inside the building, they have told KTVU that it appears the home contained a legal indoor marijuana growing operation.

Three men apparently entered the home early Monday intending on a staging an armed robbery. One of the intruders shot at watchdog and the caretaker of the grow operation opened fired a weapon and fatally struck one of the men.

The caretaker has been taken into police custody for questioning. The caretaker’s weapon and a gun allegedly belonging to the intruders were found at the scene. A search of the Chinatown area for the two other men -- described as Asian males -- was underway and officers blocked the entrance to the Webster St. tunnel for some time. It was reopened in time for the morning commute.

No other details were immediately available.