Police are already investigating a series of bombings thatbegan on Friday, when an explosion killed two people and woundedone in a guesthouse in the town of Taungoo, about 55 km (35miles) from the capital, Naypyitaw.
Although the cause of Monday's blast in Yangon has not yetbeen determined, police lieutenant captain Han Win Soe said: "Weare looking at who stayed in the room before that guest."
Security officers were sifting through a debris-filled roomon the ninth floor of Traders, a popular hotel in downtownYangon, according to a Reuters witness. Glass from the room'swindow was spread out across the street below.