Alternative investments giant Cerberus Capital Management will not invest in controversial security firm Blackwater Worldwide, it said yesterday.

Cerberus had been in talks to invest $200 million in Blackwater, with its auditors reportedly looking at Blackwater’s books since the beginning of the year. But ABC News says that the talks have broken down, with a Cerberus spokesman saying the firm had decided not to pursue a deal with Blackwater.

Blackwater has hundreds of millions in contracts with the U.S. government for providing security in Iraq. The firm has been the subject of intense controversy over its practices in that war-torn country, as well as alleged arms trafficking and overbilling.