"He is unable to handle the situation in the state where his party is in power, but he harbours the ambition of becoming the Prime Minister of the country," Shah, a close aide of Narendra Modi said here.
He accused the UPA government of misusing CBI "to protect the corrupt and victimise political adversaries of the Congress party."
Shah showered praise on Modi and claimed that his efficient administration had ensured peace in Gujarat where "not a single hour of curfew has been clamped in any part of the state in the last decade".
The party's general secretary in-charge of Uttar Pradesh, attended a meeting of party workers before leaving for Phaphamau on the outskirts of the city where he addressed a 'Kisan Janjagaran Yatra' organised by senior party leader Siddharth Nath Singh.
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Meanwhile, SP supporters staged a demonstration at the city's Civil Lines against Shah's visit and accused BJP of "engineering communal tensions" and "polarising voters along communal lines for electoral gains".
They also set fire to an effigy of Shah and raised slogans describing the BJP general secretary as 'Ravan ka avatar'.
BJP state president Laxmi Kant Bajpai alleged that while the SP government in the state had "persecuted MLAs and other leaders of our party in connection with the Muzaffarnagar riots", it had been "going soft on those associated with Congress and BSP".