Republicans launched investigations Monday into Hunter Biden's plea deal that fell apart last week, The New York Post reported.

Three Republican-led panels sent a letter to Attorney General Merrick Garland demanding more information on the now defunct deal, which they say was highly unusual and amounted to a "slap on the wrist."

"Two provisions buried in a leaked diversion agreement would have granted Hunter, 53, broad immunity for past crimes, despite a prosecutor’s claims to the contrary in court, and would have prevented the Justice Department from charging Hunter if he violated the terms of his probation unless a judge gave permission," The Post's report stated.

In their letter, GOP lawmakers said Hunter's "unusual plea and pretrial diversion agreements with Mr. Biden raise serious concerns — especially when combined with recent whistleblower allegations — that the Department has provided preferential treatment toward Mr. Biden."

Read more at The New York Post.