Government says couple tried to thwart terror investigation.

By Guillermo Contreras

Updated 11:30 p.m., Friday, May 27, 2011
A Somali couple have been arrested in a federal terrorism investigation in San Antonio in which the pair are alleged to have lied to FBI agents and an immigration court.

Abdullah Omar Fidse, 22, already was in custody in Texas, and his wife, Deka Abdalla Sheikh, who's in her 20s, was taken into custody Thursday in Wisconsin.

A federal grand jury in San Antonio indicted the pair Wednesday on charges of conspiring to obstruct a proceeding before a federal department or agency, and conspiracy to make false statements to the executive branch during a terrorism investigation.

Neither is charged with acts of terrorism. The indictment states that the FBI's Joint Terrorism Task Force tried to glean whether Fidse planned any harm to the United States.

During the investigation, an undercover source secretly audio-taped Fidse on June 3, 2009, claiming that “he bought an armed technical, that is a battle vehicle with weapons, for $100,000 that was destroyed in a battle and all aboard were killed,â€