Police: Chiranuch was arrested without prior summons because the case is serious

According to Matichon, Pol Lt Col Chachpong Pongsuwan, investigator at Khon Kaen Police Station, said that a lèse majesté charge had been lodged against Chiranuch Premchaiporn since 2008. The case has been vetted by the Provincial Police Board Region 4, and is now being prosecuted by a department of the National Police Bureau. A summons is not necessary in this case because the offence carries a severe penalty.

Source: 
<p>http://www.prachatai3.info/journal/2010/09/31241</p>