Bangkok Police is warning for lost motorbikes. They have reports from sources in the south that the Muslim insurgents might carry out bomb attacks in Bangkok as well and use motorbikes as they have done in South Thailand. The army and police have recently arrested many insurgents in South Thailand and that have created a major blow to them. There for they might strike at something more closely to the government then before to make their point.
A increase of stolen motorbikes have made the police aware of that they might use motorbikes to carry out bombs.
The police have also got indication that the insurgents might use none Thais for the bombings, what that means the police did not want to say.