NEW YORK (AP) " Survivors and others are set to gather at the World Trade Center to mark the anniversary of a terror attack: the deadly 1993 bombing.

Monday is the 25th anniversary of the blast, which killed six people, one of them pregnant, and injured more than 1,000. It became a harbinger of terror at the twin towers, eight years before their destruction on 9/11.

A ceremony on the Sept. 11 memorial plaza will include the reading of victims' names and a moment of silence at 12:18 p.m., when the bomb exploded. Earlier Monday, a Mass at a nearby church will remember those killed.

Sept. 11 museum president Alice Greenwald says the bombing marked a pivotal moment in the city's history and the nation's reckoning with the threat of international terrorism.