Sumon Shikdar Musa, the mastermind  of Awami League leader Zahidul Islam Tipu murder, has been brought back home from Oman. A team of DB police with Musa arrived at Chattogram Airport from Oman around 11 am on Thursday, said Rifat Rahman Shamim, deputy commissioner of DB police, Motijheel division. On June 6, three policemen-additional deputy commissioner of Dhaka Metropolitan Police, DB (Motijheel zone) Shahidur Rahman Ripon, additional deputy commissioner Rafiqul Islam and assistant superintendent of police Foyez Uddin of NCB Department of Police headquarters went to Muscat for bringing Musa home. Read: Assaulting policemen: Five put on remand According to the DB police, Musa went to Dubai on March 12 after hiring one Shamim Molla to kill AL politician Zahidul Islam Tipu. Later, he fled to Oman. On May 17, Oman police arrested Musa upon request of Bangladesh DB police. On the night of March 24, Tipu, who was on a microbus, and Samia Afrin Priti, a 22-year-old college student, who was returning home on a cycle rickshaw were killed in firing in front of Islami Bank Hospital in Dhaka. Tipu was a former general secretary of the AL Motijheel committee and Priti was a student of Begum Badrunnesa Government College. Tipu’s driver was also injured in the firing. They were all stuck in a traffic jam in the area when a biker wearing a helmet and a mask appeared from nowhere and fired at them. The next day, a case was filed against unidentified people over the double murder. On March 27, police arrested Masum alias Akash, 34, the prime accused in the double murder case from Bogura district. The next day, a Dhaka court placed Akash on a seven-day police remand for custodial interrogation. Read: ow a minor traffic offender engaged an entire mob to attack police Following interrogation, police came to know that Musa was the mastermind of the murder and Arfan, Shamim and Manik were involved in the killing. Shamim, who directly took part in the murder, fled to Bhutan after the murder. So far, 12 people have been arrested in the case, said police.