The Obama administration is refusing to call for a new probe into the US military’s killing of twelve Iraqis despite the public release of video footage capturing the attack on tape. Earlier this week, the watchdog website WikiLeaks released a classified US military video showing a US helicopter gunship indiscriminately firing on Iraqi civilians in 2007. The victims included two employees of the Reuters news agency, photographer Namir Noor-Eldeen and driver Saeed Chmagh. Two children were also badly wounded. On Tuesday, White House Press Secretary Robert Gibbs said he’s unsure if President Obama even saw the tape.

White House Press Secretary Robert Gibbs: “I do not know whether the President has seen the video that was released on the internet. Obviously it is very graphic in nature, and it’s extremely tragic. For details of the investigation that the Defense Department, the Pentagon, did on that, around that incident, obviously I would point you over to the Department of Defense.”

Reporter: “Do you think that this warrants some additional investigation, though?

Robert Gibbs: “Glenn, I don’t, in all honesty, know enough about what was done previous, which is why I would point you over to the Department of Defense.”

Family members of the victims have urged the US to launch a new investigation and bring the US servicemembers involved to trial. An initial military probe shortly after the killings cleared the attackers of any wrongdoing.