Regional Director of a Koraput-based DRDO unit R K Satpathy was immediately rushed to a government hospital and his condition was stated to be out of danger, police said.
The Defence Research and Development Organisation (DRDO) said the incident has nothing to do with "DRDO affairs".
"Satpathy, who came for shopping in the Charminar area, was attacked by a knife by the juvenile who was fleeing from a group of persons who wer beating him," ACP (Charminar Division) D Venkat Narsaiah told PTI.
The boy managed to escape and efforts were on to nab him, police said.
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"The DRDO official was immediately rushed to a government hospital and his condition was out of danger," the senior police official said.
The Regional Director of Regional Centre for Military Airworthiness was on a visit here, said Ravi Kumar Gupta, Director, Directorate of Public Interface, DRDO.
Satpathy was rushed to a hospital. "He is out of danger," Gupta said.