WASHINGTON — Chief Justice John Roberts on Tuesday confirmed the authenticity of a leaked draft opinion suggesting the Supreme Court may be be poised to overturn the landmark 1973 Roe v. Wade case that legalized abortion nationwide.

Roberts also ordered an investigation into what he called an “egregious breach of trust.”

In the high court’s first public comment since the draft was published late Monday, Roberts said, “Although the document described in yesterday’s reports is authentic, it does not represent a decision by the Court or the final position of any member on the issues in the case.”

“To the extent this betrayal of the confidences of the Court was intended to undermine the integrity of our operations, it will not succeed,” he said in a written statement.

He added: “I have directed the Marshal of the Court to launch an investigation into the source of the leak.”

President Joe Biden on Tuesday blasted as “radical” the draft Supreme Court decision that would overturn Roe v. Wade, the landmark 1973 decision that protected abortion rights.

“It concerns me a great deal that after 50 years we’re going to decide that a woman doesn’t have the right to choose,” Biden told reporters before boarding Air Force One for a trip to Alabama.

If the decision is issued, he said, “a whole range of rights” that are based on the presumption of privacy will be in question, including access to contraception and same sex marriage.

“It’s a fundamental shift in American jurisprudence,” Biden said.

Biden said he wanted Congress to pass legislation codifying Roe v. Wade, but he wasn’t prepared to say whether the Senate should sidestep the filibuster to do so.