The incident occurred last evening when the boy, identified as K Karthik, was playing along with some other children with a ball near the tennis court premises.
"After the ball fell inside the court premises, Karthik entered the area and apparently found that the ball had fallen in a water pit. He entered the pit to take out the ball, but drowned," a Gachibowli police station official said.
No one was present on the premises at the time of the incident, the official said, adding they have registered a case under relevant sections of the IPC.
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