Rescue workers at the site started to find remains of bodies from the victims of Flight 11 soon after the attack. Some workers found bodies strapped to airplane seats. Other workers discovered the body of a flight attendant with her hands tied up. That meant that the hijackers may have used handcuffs. Within a year, remains of the 33 victims that had been on Flight 11 had been identified. They identified two other Flight 11 victims, lead flight attendant Karen Martin and another person, after body remains were discovered near Ground Zero in 2006. In April 2007, examiners using newer DNA technology identified another Flight 11 victim. The remains of two hijackers, who could have been from Flight 11, were also identified and removed from Memorial Park in Manhattan. The remains of the other hijackers have not been identified and are buried with other unidentified remains at Memorial Park.