I have received this via email:

Two core leaders of the Student Federation of Thailand have just been issued summons to the CRES headquarters at the 11th Infantry Regiment for 10am Sunday morning. The summons were hand-delivered by a group of policemen who arrived on their doorsteps at 6pm. I have just spoken to one of them on the phone, and got the impression that she didn’t really know what she was in for (as they told her nothing of reasons, but inquired as to whether she used the internet often. They also took her photo and some photos of her apartment.)