NEW YORK – Police are reviewing surveillance videos of a post-Thanksgiving shopper stampede that trampled a suburban Wal-Mart worker to death, but they acknowledge it may be difficult to bring criminal charges.

Nassau County police and Wal-Mart Stores Inc. said no new information was available Saturday on the employee’s brutal death, which rattled shoppers even as they flocked to the Valley Stream store a day later.

Police said the temporary worker, Jdimytai Damour, was mowed down as about 2,000 bargain-hunters surged into the store at Friday’s 5 a.m. opening, leaving a metal portion of the door frame crumpled like an accordion.

Other workers were knocked to the ground as they tried to rescue Damour, and customers simply stepped over him and kept shopping even as the store announced it was closing because of the death, police and witnesses said.