SAN DIEGO -- San Diego Unified School District board trustees have voted to revoke the charter of A. Phillip Randolph Leadership Academy following an audit showing financial irregularities at the school.

The trustees voted unanimously Tuesday to shut down the taxpayer-funded charter school, which opened last September and promised to deliver free quality education to underprivileged children, The San Diego Union-Tribune reported.

Audits by the district found financial mismanagement and failure to comply with state laws.

The school, which served predominantly Latino and black students in sixth through 12th grades, had received about $400,000 in public money and failed to properly document and justify much of its expenses, auditors told the newspaper.

Randolph laid off all of its teachers in May when it ran out of money to pay them, relying on volunteers until the school closed for the year last month.

The Rev. Richard f. Smith Jr., who sits on Randolph's board and is the school's bookkeeper, blamed the school's troubles on a lack of support and guidance from the district. He also said the district withheld money from Randolph, the newspaper reported.

District audits accuse some Randolph staff members and board members of misappropriating $171,554 and hiring teachers without proper credentials, according to the Union-Tribune.

According to the district, the school owes the district $79,210 and the state about $25,000 for closing early and not meeting its enrollment projections.

The school originally served about 100, but enrollment shrank to 64, the newspaper reported.

Smith denounced the findings as "distortions" and "innuendos" designed to "defame community-based charter schools," the Union-Tribune reported.