At least 12 people died in the incident that occurred in the afternoon. Many are feared trapped in the debris.
"Extremely saddened by the loss of lives due to the collapse of an under-construction flyover in Varanasi. I pray that the injured recover soon. Spoke to officials and asked them to ensure all possible support to those affected," he tweeted.
In another tweet, he said he had spoken with UP Chief Minister Yogi Adityanath. "The UP Government is monitoring the situation very closely and is working on the ground to assist the affected."
Naidu too condoled the deaths in the incident in a tweet.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)