Attorney General Eric Holder on Monday weighed in on the acquittal of George Zimmerman of all charges in the killing of teenager Trayvon Martin.

Holder didn't take a position on whether the Justice Department should file civil rights charges against Zimmerman -- as many on the political left are urging -- but instead called Martin's death "unnecessary" and commiserated with those seeking federal action.

“The Justice Department shares your concern — I share your concern — and, as we first acknowledged last spring, we have opened an investigation into the matter," Holder said at the social action luncheon of Delta Sigma Theta sorority.

Holder said the Justice Department would “continue to act in a manner that is consistent with the facts and the law." He is expected to offer more in-depth remarks Tuesday during an address to the NAACP in Florida.

Following his speech, the Justice Department released the following statement:

"Experienced federal prosecutors will determine whether the evidence reveals a prosecutable violation of any of the limited federal criminal civil rights statutes within our jurisdiction, and whether federal prosecution is appropriate in accordance with the Department's policy governing successive federal prosecution following a state trial.”

Here's the full story from Bill Branigin and Sari Horwitz.