Burmese police say they have questioned six people about an explosion at a luxury hotel in Rangoon.

The explosion happened Friday on the lawn of the Traders Hotel. Nobody was injured in the incident that caused no significant damage.

Rangoon Police Chief General Khin Yi, said Sunday six people had been questioned, but no group could yet be blamed because investigations are still ongoing.

Earlier, officials released a statement that alleged several groups including the All Burma Students Democratic Front, the Karen National Union, and the Vigorous Burmese Student Warriors were behind the small blast.

The Burmese Information Minister Brigadier General Kyaw Hsann also said authorities had thwarted a separate major bomb attack.

Burma's tightly-guarded capital has seen a number of explosions in recent months. The government regularly blames exile groups that oppose military rule. Some dissidents say the blasts are carried out by government-linked groups to justify tighter
security.

Information for this report is provided by AP.