A Chicago Burger King manager says that he testified before a grand jury this week about police deleting surveillance video that may have captured images of a black teenager in the moments before he was shot by a white officer there, according to local media reports.<br />Officer Jason Van Dyke has been charged with first-degree murder in the death of Laquan McDonald.<br />Court-ordered release of squad car, dashcam video of the Oct. 24 confrontation shows Van Dyke shooting McDonald 16 times.<br />Jay Darshane, the Burger King manager, has accused police of erasing the restaurant's surveillance tape.<br />He also told the Chicago Tribune that the FBI seized the video recorder containing all of its surveillance images.