The Senate Veterans Affairs Committee will delay confirmation hearings for Rear Adm. Ronny Jackson, President Donald Trump’s pick to run the Department of Veterans Affairs, after allegations rose from his past.

An aide with ranking Democrat Jon Tester confirmed to Roll Call that hearings were delayed after Chairman Johnny Isakson told the Washington Post and CNN.

The two also released a statement.

“We take very seriously our constitutional duty to thoroughly and carefully vet each nominee sent to the Senate for confirmation,” the joint statement read. “We will continue looking into these serious allegations and have requested additional information from the White House to enable the committee to conduct a full review.”

Democratic Sen. Richard Blumenthal of Connecticut told The Associated Press that Republicans on the committee wanted the confirmation hearings for Jackson postponed.