The day was celebrated by the ruling Congress and the main Opposition parties.
The 'Hyderabad Liberation Day' was celebrated by the ruling Congress, main opposition Telugu Desam Party, the Bharatiya Janata Party and the Telanga Rashtra Samithi in Andhra Pradesh today.
MLC D Srinivas, the former state Congress unit president, hoisted the national flag at Gandhi Bhavan, the state party headquarters.
TDP chief N Chandrababu Naidu, who hoisted the tri-colour at the party office, claimed that the credit for developing Hyderabad and Telangana region went to his party.
"The subsequent Congress regime destroyed the development in the city and has now created uncertainty in the region," he alleged.
BJP, which has demanded official celebration of the Hyderabad Liberation Day, said it would mark the event in a grandiose fashion in every village after the formation of the proposed Telangana.
State BJP president G Kishan Reddy unfurled the national flag at the statue of late Sardar Patel outside the Legislative Assembly.
The erstwhile Hyderabad was liberated from the Nizam rule and merged with the Indian Union on September 17, 1948.