The band issued a short statement on Wednesday (27Feb13), confirming that Weiland had been asked to leave, but offered no explanation.
The press release read: "Stone Temple Pilots have announced they have officially terminated Scott Weiland."
The singer and his now ex-bandmates Dean and Rob DeLeo have had a tumultuous history which has included bust-ups and break-ups. The trio reunited in 2007 just before Weiland was kicked out of Velvet Revolver.
His former bandmate Slash preempted the split story late last year (12) when he told a Minneapolis radio station that Weiland had been "fired from Stp".
Weiland recently announced plans for a solo tour.
Representatives for Weiland and the DeLeo brothers insist more information about the split will be released soon.