Rapid Action Battalion (Rab) members have arrested the key suspect in a case filed over the murder of a woman and her son in Chandgaon of Chattogram city. Md Faruk (33), a vegetable vendor, was held from the port city's Pakkar Matha under Akbar Shah Police Station during a drive yesterday, said Lt Col Moshiur Rahman Jewel, commanding officer (CO) of Rab-7. On August 24, police