(credit: Ken Conley)

The “credible” threat that caused the Los Angeles Unified School District (LAUSD) to close all schools on Tuesday was sent from cock.li, the “meme” e-mail host that also provides e-mail services for 8chan, the 4chan splinter site.

School officials in New York and Los Angeles reportedly both received threats from madbomber@cock.li but only LAUSD took it seriously. All 640,000 LAUSD students were unable to attend classes on Tuesday.

Vincent Canfield, the founder of cock.li, posted a copy of the subpoena he received from a New York detective on his own website and included audio recordings of polite but brief conversations with two officials from the New York Police Department (NYPD) Intelligence Bureau.