LONDON — Interpol suspended an agreement with FIFA on Friday that had called for the international police agency to receive 20 million euros over 10 years to fight corruption in soccer, citing the American investigations that have ensnared soccer’s world governing body.

Pietro Calcaterra, a spokesman for Interpol, confirmed that since 2011, Interpol, which has a staff of more than 800 and describes itself as the world’s largest international police organization, has been augmenting its annual budget — about €80 million, or about $90 million, last year — by turning to the private sector.

The four-year-old deal had raised doubts about the risks of a conflict of interest and questions about whether it was appropriate for Interpol to accept millions of euros from FIFA.

Sepp Blatter was re-elected to a fourth term as FIFA’s leader in 2011 just weeks after the agreement was signed, raising questions about whether he had used the deal to try to deflect accusations about corruption that have long swirled around his organization.