"Too much interference in the federal structure is unacceptable. The state govt is an elected body. Central govt is also an elected body," Banerjee tweeted.
"Every elected body has its own jurisdiction. One must respect the other," she said in another tweet.
Her tweets indicated her showing solidarity with Kejriwal, who is locked in a bitter stand-off with the the Delhi Lt Governor over powers.
She tweeted as Kerjriwal called her up for "advice", sources said.
Kejriwal had called up Banerjee earlier also, about a month back, the sources said.