The NBA investigated the Brooklyn Nets for their signing of Andrei Kirilenko and cleared the organization in a "thorough" probe, according to sources.

Kirilenko, who made roughly $10 million in Minnesota last season, opted out of the final year of his Timberwolves’ deal and took the Nets’ $3.1 mini-midlevel exception. In doing so, he triggered a wave of anger and suspicion.

The league launched its investigation, questioning participants. Nets officials were summoned — at one point on a weekend, usually a time off in the summer for league execs.

“It was a very, very thorough investigation,” one source said. “They checked everything.”