Mathew Greg Bennett was tailed and arrested by law enforcement agencies in Rawalpindi on claims of involvement in suspicious activities. In June 2011, an American citizen living in Pakistan with his Pakistani wife and family, Mathew Craig Barret, was arrested in Islamabad. Barret was suspected to be spying on the country's nuclear facilities and was blacklisted by the interior ministry after he had dodged an earlier arrest allegedly after being found doing "suspicious activities." Following a police raid in his house, he was put in lock-up jail and was to be deported and prevented from entering the country. On 12 June 2011, yet another American national was arrested, this time in Sukkur; David Sat, who was working for an NGO, was detained by authorities after he was found to have overstayed his visa by two months. A case was registered against him. Pakistani security and defence expert Shireen Mazari, who is also known for being a vocal critic of American policies, once had a verbal brawl in an Islamabad restaurant with an American man whom she later referred to as a "bloody CIA agent"; Mazari said that suspicious looking Americans are prevalent in large numbers in Islamabad, operating under the cover of diplomacy, and that they are "running loose in Islamabad intimidating whomever they choose." Pakistan has blacklisted many American non-governmental organizations and media personalities and denied visas to US nationals. In 2011, after continuous scrutiny and following the death of Osama bin Laden in his compound in Abbottabad which caused a diplomatic controversy between Pakistan and the United States, the Pakistani government and the military establishment ordered the reduction of the number of American personnel present in Pakistan. Consequently, many American security personnel were dumped and forced to leave the country. In 2003, the American actor Erik Audé was arrested and imprisoned for seven years in Pakistan on charges of drug trafficking. In 1997, four American oil workers and their driver were shot by multiple gunmen while they sat in their car on a crowded street. Two men, both members of the Muttahida Qaumi Movement, were sentenced to death in 1999 for the shootings. In 2002, there were further terrorist attacks against Americans and expatriates of other nationalities, including a bombing at the US consulate. In November 2008, foreign aid worker Stephen Vance was ambushed and killed on his way to work in Peshawar. In 2003, The New York