Sultan of Brunei Darussalam Haji Hassanal Bolkiah left Dhaka for his country by a special VVIP flight on Monday morning.
Bangladesh foreign minister AK Abdul Momen saw him off at Hazrat Shahjalal International Airport.
He also handed over an album to the Sultan containing photos of his two-day state visit that ended on Sunday evening.
The Sultan arrived Dhaka on Saturday afternoon and held meetings with president Abdul Hamid and prime minister Sheikh Hasina on Saturday and Sunday respectively.
The two countries signed four bilateral cooperation documents including a memorandum of understanding on energy cooperation after his official talks with the prime minister on Sunday.
