Mexican authorities said Friday that they had arrested a suspect in the killing of U.S. Border Patrol agent Brian Terry, whose death sparked an investigation into a botched Justice Department gun-tracking operation.
Jesus Leonel Sanchez Meza, one of five men charged with killing Terry in December 2010, was arrested in Sonora state, the Associated Press first reported.
A weapon found at Terry's murder scene was linked to the DOJ's Fast and Furious operation which sought to track gun sales to Mexican drug gangs.
In June, the GOP House passed resolutions holding Attorney General Eric Holder in contempt of Congress for not complying with a subpoena to provide additional documents related to Fast and Furious.
After the DOJ declined to prosecute Holder for being held in contempt, the House Oversight Committee filed a civil lawsuit in federal court to compel Holder to turn over more information.
President Obama has asserted executive privilege over many documents requested by GOP lawmakers.
Republicans have charged the White House with obstructing Congress's oversight, while Democrats accuse Oversight Committee Chairman Rep. Darrell Issa (R-Calif.) of pushing a politically motivated investigation and wasting taxpayer dollars.
The Justice Department has turned over 7,600 pages of documents in response to the congressional probe, but Holder has resisted further subpoenas, claiming additional disclosures would harm ongoing criminal investigations.
Holder has testified before Congress that top Justice officials were unaware of the program and moved quickly to stop the operation once they were apprised of its details.
Holder has appointed two DOJ attorneys to investigate Fast and Furious, but Republicans have questioned the independence of the probe.
Three other suspects in the death of Terry are still at large and a fourth is in custody. The five suspects including Meza all face murder charges.