The second Zia administration saw improved economic growth, but political turmoil gripped the country between 2004 and 2006. A radical Islamist militant group, the JMB, carried out a series of terror attacks. The evidence of staging these attacks by these extremist groups have been found in the investigation, and hundreds of suspected members were detained in numerous security operations in 2006, including the two chiefs of the JMB, Shaykh Abdur Rahman and Bangla Bhai, who were executed with other top leaders in March 2007, bringing the militant group to an end.