Singh alleged state Congress chief Uttam Reddy and former minister Shabbir Ali were attacked by the "goons" of AIMIM MP Asaduddin Owaisi and the police remained a "mute spectator" despite the incident taking place in front of a police station.
"Strongly condemn the dastardly attack on Telengana PCC President Uttam Reddy and Ex Minister Shabbir Ali by Asad Owaisi and his goons.
"All this happened in front of Police Station with Police as a silent spectator. Congress Party would fight these communal elements. We demand immediate arrest of all those who were involved in this attack," he said in a series of tweets.
Reports said they attacked Reddy's car and damaged its window panes and manhandled Shabbir, who received injuries including one near his eye.
The incident led to tension in the area, reports said.