President Trump will not be releasing his tax returns this week as millions of people finalize their 2016 tax returns and send them to the Internal Revenue Service, White House press secretary Sean Spicer said Monday.

Trump is still under audit from the IRS and will not release his returns, even though the IRS said last year Trump could voluntarily release them.

"The president is under audit, it's a routine one and I think the American public know clearly where he stands," Spicer said.

Thousands of people marched around the country on Saturday to pressure Trump to release his tax returns. During the 2016 campaign, Trump became one of the first modern presidential candidates — and then presidents — not to release his tax returns to the public.

The Trump campaign released an IRS statement in March 2016 to prove the audit was taking place. Spicer said that is ongoing.

"We're under the same audit that existed and nothing has changed," Spicer said.