In one incident, a motorcycle rider and his passenger were killed after being hit by a truck in Phulbari, said sub-inspector Faridul Islam of Phulbari Police Station.
The deceased were identified as Abdul Motaleb, 27, son of Abdur Razzak of Joyrampur in Kaharol upazila, and Saju Islam, 33, son of Anarul Islam of Jagannathpur in the same upazila.
Motaleb, a motorcycle rider based in Dhaka, was travelling to the capital with Saju when the accident occurred.
In an earlier incident, around midnight on Monday, a truck hit the rear of a parked truck in the Bajitpur area of Bhaduria in Nawabganj, leaving driver Al Amin Alam dead, said sub-inspector Golam Mostafa of Nawabganj Police Station, reports UNB.