ALBANY – The state attorney general, Eliot Spitzer, has found that a state senator improperly spent almost $5,000 in government grants intended for a Bronx social center and “cyber cafe” on furniture for himself and loudspeakers.

But workers at the center accused Mr. Spitzer, the Democratic candidate for governor, of going easy on the center’s operator, state Senator Ruben Diaz, a Democrat of the Bronx. The employees who made the original complaint said Mr. Spitzer failed to investigate fully their claims of widespread misuse of federal money, according to the New York Daily News.

The investigation began with a “laundry list” of accusations by some workers at the nonprofit center against Mr. Diaz, who was the $65,000-a-year chief executive officer of Soundview Community in Action, a popular Bronx social center featuring Cyber Casa. But after 11 subjects were interviewed in the two-year investigation, only the two accusations could be proved, a spokesman for Mr. Spitzer, Paul Larrabee, said. The letter detailing the accusations wasn’t immediately available, Mr. Larrabee said.

In December, Mr. Diaz wrote two checks from his campaign fund to end the investigation.

Mr. Diaz repaid $1,861 to the U.S. Small Business Administration for a grant that was to be used for office furniture at Soundview, but which he used for his political or state office, Mr. Larrabee said. Mr. Diaz wrote another check for $2,359 to the state Office of Children and Family Services for loudspeakers, Mr. Larrabee said.

“I have no comment on that,” Mr. Diaz yesterday.

“We went through a variety of expenditures and checks as well as the allegations against him and these were the two that didn’t seem to be supported by either the nature of the grant or the intent of the mission for Soundview,” Mr. Larrabee said.

No other action is pending against Mr. Diaz by Mr. Spitzer.