At least 11 people died and 30 people were injured after a bus travelling on the Hyderabad-Vijayawada highway fell into a culvert.
The bus belonged to Diwakar Travels, and the incident happened in the early hours of Tuesday, at around 5am.
The accident is said to have happened in Krishna district near Penuganchiprolu.
According to local media reports, the bus was travelling to Hyderabad and the driver was said to be sleepy, because of which he lost control of the bus.
Soon after the accident, eye-witnesses called the police, who in turn rushed to the spot.
As the bus fell into a culvert and got stuck in water, rescue operations were tougher.
Visuals showed authorities lowering a rope, to lift stranded passengers out of the vehicle.
The injured were rushed to a private hospital in Nandigama in Krishna district.
Diwakar Travels is owned by TDP MLA JC Prabhakar Reddy from Andhra and his brother, and Anantapur MP JC Diwakar Reddy.
Further details are awaited.
(This is a developing story, and will be updated.)