Washington (AP) - A gunman who fired shots at a Washington-area Marine Corps museum and is believed to be responsible for three similar incidents may have a grievance against the U.S. Marine Corps, the FBI said Friday.
John Perren, the acting assistant director for the FBI's
"We'd like to know what this grievance is and what we can do to try to help solve it," Perren said.
He said the suspect may be dealing with a traumatic event such as loss of a job, financial problems or divorce.
Perren said officials are working under the assumption that the individual was part of the Marine Corps.
Perren urged anyone who may have information about the suspect to contact authorities and told people to quickly report gunfire or suspicious activity.
Someone fired shots at the museum in Triangle,
The shooting is the second time someone has fired at the museum. Bullet holes were first found there Oct. 17. Two days later, shots were fired into two windows at the Pentagon.
A third military office - a Marine Corps recruiting station in
The FBI has said the first three shootings are connected, and investigators say they assume the fourth is connected as well.
Pentagon spokesman Col. Dave Lapan said Friday that security would be even tighter than usual for the Marine Corps Marathon this weekend because of the recent shootings. The Pentagon is a staging ground for Sunday's race.