The Transportation Security Administration has subpoenaed two bloggers who posted a leaked memo about increased security measures after the failed airline bombing last week, the AP reports.

The TSA is demanding to know who leaked the memo:

TSA special agents served subpoenas to travel bloggers Steve Frischling and Chris Elliott, demanding that they reveal who leaked the security directive to them. The government says the directive was not supposed to be disclosed to the public.

Frischling said he met with two TSA special agents Tuesday night at his Connecticut home for about three hours and again on Wednesday morning when he was forced to hand over his lap top computer.

Frischling says the memo "showed up in my box" and that he doesn't know who sent it. Elliott is reportedly consulting with his lawyers. 

Earlier this month, before the attack, a similar TSA memo outlining security procedures also made its way to the internet.