1: Yashasvi Yadav , Senior Superintendent of police in Lucknow , northern India , told CNN the city 's force has bought four drones and is in the process of purchasing one more . 2: Some say this method of crowd control needs regulation too . 3: Police in Lucknow , northern India , have bought four drones to help control crowds .
1: bought four drones 2: this method of crowd control 3: bought four drones to help control crowds