Bradley Manning activist subpoenaed in WikiLeaks investigation

A computer expert and vocal supporter of the Army private accused of leaking classified documents to WikiLeaks has been served a subpoena compelling his testimony in the Grand Jury investigation of the leaked documents.

Salon's Glenn Greenwald reported that activist David House, one of the founders of the Bradley Manning Support Network, has been subpoenaed to appear before the Grand Jury next Wednesday. Manning's ex-boyfriend Tyler Watkins and cryptography expert Nadia Heninger have also been subpoenaed.

Last month, House filed a lawsuit against the U.S. government over the seizure of his laptop and other electronic equipment by federal agents. He was returning to the U.S. on Nov. 23, 2010, after a vacation to Mexico, when all of his electronics were seized by agents acting without a warrant.

House claimed they questioned him for hours about Manning and WikiLeaks, then refused to return his equipment.

U.S. Attorney General Eric Holder said in December 2010 that the Department of Justice would take "significant" actions related to a criminal investigation into WikiLeaks, but would not elaborate.