Meanwhile, BNP acting secretary Mirza Fakhrul Islam Alamgir left Dhaka for Singapore for medical check-up.
He left the Hazrat Shahjalal International Airport around 8.30am by Bangladesh Airlines flight.
The BNP leader will receive treatment at National University Hospital, Singapore for various health complexities, including blockage in the nerve of his neck.
He is scheduled to return home on October 21.
Earlier, getting released from jail six months after his arrest, Fakhrul went to Singapore for treatment on July 27 and later he went to the USA from Singapore on August 10 for a surgery.
He returned home on September 21 after taking medical treatment in the USA and Singapore.