A new, bitter standoff between the Centre and Delhi government, which found an echo in Parliament, plunged the Capital into turmoil Tuesday after the CBI searched the office of the Chief Minister’s Principal Secretary in an alleged corruption case, prompting an angry Arvind Kejriwal to accuse Prime Minister Narendra Modi of using the probe agency to “intimidate” him and his government.

As the AAP and the Centre traded charges, Kejriwal said he was the target of the CBI raid and Principal Secretary Rajendra Kumar was just an “excuse” — a charge Finance Minister Arun Jaitley rejected in Rajya Sabha where the government was attacked for going after Opposition-ruled states.

Announcing “CBI raids my office” via a tweet, Kejriwal attacked the Prime Minister: “I’m telling you Modiji, you may have scared others but I’m not among those who can be intimidated. I’ll fight till my last breath.”

“When Modi cudn’t handle me politically, he resorts to this cowardice. Modi is a coward and psychopath,” he tweeted.

Kejriwal also targeted Jaitley: “FM lied in Parliament. My own office files are being looked into to get some evidence against me. Rajender is an excuse”.

He later told reporters that the CBI was looking for an inquiry committee file relating to Delhi District Cricket Association (DDCA) that “traps” Jaitley.

“It has become necessary to reveal that why did the CBI come to my office today and which was the file they were looking for. Yeh file hai DDCA ka file jiske andar Arun Jaitley phas rahe hain (This is the DDCA file under which Arun Jaitley is getting trapped),” he claimed.

Kejriwal said the committee tasked to probe alleged irregularities in DDCA had submitted its report.

“Jaitley was the DDCA president for many years and I had set up a committee to probe all the corruption that had taken place during his tenure. The committee has submitted its report and a commission of inquiry was to be set up over it, and a file pertaining to it was in my office,” he alleged.

On his remarks against the Prime Minister, he said: “They say that my choice of words were incorrect, but your actions are bad. My words may be bad, I was born in Siwan village of Haryana. Maybe my words were bad. But your actions are bad. You apologise to the nation for your misdeeds and I will apologise for my words,” he said.

The BJP condemned his “disgraceful” remarks and demanded an apology. Union Minister Ravi Shankar Prasad rejected Kejriwal’s claim that CBI raided his office, saying it was not even “touched” by the agency.