Former Dhaka University Vice Chancellor Emajuddin Ahmed fears Bangladesh could turn into a failed state if the situation persists.
"The state institutions are not functioning properly. RAB and police are oppressing opposition party activists instead of maintaining law and order," he told a programme in Dhaka on Friday.
Ahmed on Jan 11 said the BNP could join parliamentary polls under Prime Minister Sheikh Hasina’s administration, but added the army must be made to play a major role to ensure the vote was free and fair.
The BNP, which boycotted the last general election, has been pressing for a snap election.
Ahmed alleged the government was running the country with sheer force.
"A state cannot go on for long this way. Bangladesh has not become a failed state yet but it won't take long at this rate," the political scientist warned.
He continued: "The political parties must sit for talks and the topic must be elections."
BNP chief Khaleda Zia on Jan 5 called a non-stop transport blockade that has so far claimed several lives.
The Border Guard Bangladesh chief on Thursday warned that his troopers, out on the street to maintain law and order amid the turmoil, would shoot bombers to protect the general people.
The BNP has criticised the statement saying it was 'contradictory to the law'.
Ahmed said, "The BGB chief cannot announce that he would open fire on the people. His duty is to arrest the criminals."