Comilla rode on Kamrul's 70 to reach the final round of the 28th National Cricket Championship as zonal champions following their 43-run win against Chittagong in the final at the Comilla Stadium yesterday.
The hosts piled up 257-9 in the stipulated 50 overs with Manik scoring second highest 42.
Imrul and Rahat captured two wickets each for 40 and 54 runs respectively.
Chittagong were all out for 214 in 44.1 overs with Ashraful scoring 40.
Ashique grabbed three wickets for 27 and Nazrul three for 47.
Sylhet and Khulna earlier qualified for the finals.
In another encounter, Rajshahi registered an emphatic eight-wicket victory over Naogaon to book a place in the zonal final at the Rajshahi Divisional Stadium.
Rajshahi will play Rangpur in the final today.
Naogaon were all out for 106 in 41.4 overs and Rajshahi, in reply, raced to 108-2 in 17.2 overs.