NEW YORK (CNN) -- Sen. Charles Schumer said Sunday the Bush administration is trying to "blame the fire on the person who calls 9-1-1" by suggesting he had a role in one of the costliest U.S. bank failures.

Federal regulators with the Office of Thrift Supervision were "asleep at the switch" when it came to IndyMac's "reckless" behavior, the New York Democrat complained.

"OTS ought to stop pointing false fingers of blame and start doing its job to protect the future of the banking system, so that there won't be other IndyMacs," said Schumer, a member of the Senate Banking Committee, chairman of Congress' Joint Economic Committee and the third-ranking Democrat in the Senate.

OTS announced Friday that it was taking over the $32 billion IndyMac and transferring control to the Federal Deposit Insurance Corporation - and the agency pointed the finger directly at Schumer for the failure, accusing him of sparking a bank run by releasing a letter that "expressed concerns about IndyMac's viability."

"In the following 11 business days, depositors withdrew more than $1.3 billion from their accounts," the OTS said in a statement announcing the California-based lender's takeover. The statement included a quote from OTS Director John Reich saying, "Although this institution was already in distress, I am troubled by any interference in the regulatory process."

Schumer's letter on June 26 said he was "concerned that IndyMac's financial deterioration poses significant risks to both taxpayers and borrowers." But after Friday's statement, Schumer swiftly rejected any suggestions of responsibility for IndyMac's collapse -- and in a Sunday news conference, he said "everything" in his letter was already known to the public.

"IndyMac was one of the most poorly run and reckless of all the banks," he said. "It was a spinoff from the old Countrywide, and like Countrywide, it did all kinds of profligate activities that it never should have. Both IndyMac and Countrywide helped cause the housing crisis we're now in."

The embattled Countrywide Financial Corp. was recently purchased by Bank of America.

Schumer argued that the "breadth and depth" of the problems at IndyMac were "apparent for years, and they accelerated in the last six months." But OTS, he said, "was asleep at the switch and allowed things to happen without restraint.

"And now they are doing what the Bush administration always does: blame the fire on the person who calls 9-1-1."

The White House had no immediate response.

Schumer said OTS is "known as a weak regulator," and added, "my job was to try and toughen them up and that's what I tried to do."