Forest City Ratner is stopping “all abatement and demolition activities” on the Atlantic Yards complex the day after the parapet of a building fell five stories to earth, damaging cars and prompting the evacuation of 350 neighbors.

The decision was made jointly by the developer and the state agency overseeing the project, the Empire State Development Corporation, according to an ESDC statement issued this morning.

The company, in its own statement, said that it would suspend work until the city Department of Buildings concludes an investigation of what caused the collapse “or the City directs us otherwise.” The New York Times this morning said that fire officials speculated the short rooftop wall which fell may have been weakened by last week’s rain.