House Oversight and Government Reform Committee Chairman Darrell Issa on Tuesday issued a subpoena to the Internal Revenue Service, ordering the agency to turn over the hard drive they claim is responsible for wiping out two years of critical email communications.

Issa has dramatically widened his probe into the IRS after the agency announced last week that it had lost the emails, which may have provided information about an IRS policy of targeting for extra scrutiny and delay many conservative groups seeking tax-exempt status.

Issa is not only seeking emails, but wants equipment, “communication devices,” printed documents and just about anything else related to former IRS official Lois Lerner, who has refused to testify before Congress and who the GOP believes is a central player in the targeting scheme.

“After a year of beating down efforts by the Obama administration and its allies to obstruct an investigation into targeting, the IRS now says it lost perhaps the most critical evidence,” Issa said. “We still do not have answers about how and why the IRS tried to deceive Congress about these missing e-mails. This subpoena seeks those answers.”

This latest order comes a day after Issa suppoenaed IRS Commissioner John Koskinen to testify at an Oversight hearing on June 23.

Here are the items Issa is asking the IRS to produce:

+ All back-up tapes, external drives, thumb drives, or other storage media the IRS used to capture, archive, back up, or otherwise record e-mails sent or received by Lerner from Jan. 1, 2009, to Sept. 23, 2013.

+ All hard drives, external drives, thumb drives, and computers Lerner used from Jan. 1, 2009, to Sept.23, 2013.

+ All electronic communication devices the IRS issued to Lerner from Jan. 1, 2009, to Sept. 23, 2013.

+ All electronic files, including, but not limited to, .pst files, relating to the IRS e-mail account Lerner used from Jan. 1, 2009, to Sept. 23, 2013.

+ All documents and communications that Lerner printed and/or stored for Federal Records Act compliance purposes from Jan. 1, 2009 to Sept. 23, 2013.

+ All documents and communications referring or relating to the production to any congressional committee or member of Congress of e-mail communications sent or received by Lerner from Jan. 1, 2009, to Aug. 2, 2013.

+ All documents and communications referring or relating to the creation of “Enclosure 3” from the June 13 letter from Leonard Oursler to Senate Finance Committee Chairman Ron Wyden and Ranking Member Orrin Hatch, titled “Description of IRS Email Collection and Production."

+ All documents and communications between or among IRS employees and employees of any Executive Branch entity referring or relating to the IRS’ production of documents to Congress from May 10, 2013, to the present.

+ All documents and communications referring or relating to the subpoena issued by the House Committee on Oversight and Government Reform to Treasury Secretary Jack Lew on Aug. 2, 2013.

+ All documents and communications referring or relating to the subpoena issued by House Oversight to Koskinen on Feb. 14.