The Sacramento Kings ownership group and labor unions have come to an agreement over the use of unionized labor in the construction of a new arena at Downtown Plaza.

Officials with the Kings, the city, building trades unions and Turner Construction - which has been signed on to lead construction of the arena - will announce the labor agreement at a noon press conference today at Downtown Plaza, according to a source briefed on the agreement.

It is unclear if the agreement involves using exclusively unionized labor in the arena construction, or if some of the work would be done by non-union workers.

The agreement triggered immediate controversy. An anti-union group called the Coalition for Fair Employment in Construction, which opposes these labor agreements, blasted the deal and hinted that it would assist the group that is pushing a ballot initiative on taxpayer funding for the arena.

Reported by Ryan Lillis and Dale Kasler of the Sacramento Bee