The U.S. will announce another military aid package for Ukraine Tuesday, a U.S. official told ABC News.

The $500 million aid package will include 30 Bradley Infantry Fighting Vehicles, 25 Stryker armored vehicles, missiles for the HIMARS system and the Patriot air defense system, TOW missiles, Javelins and more ammunition for artillery, according to the official.

This will be the 41st aid package under the Presidential Drawdown Authority that allows the transfer of weapons from U.S. military stockpiles to Ukraine.

-ABC News' Luis Martinez

Russian President Vladimir Putin offered his first public remarks after the Wagner Group attempted to march to Moscow and overthrow the government.

In a pre-recorded video statement, Putin thanked the Russians for their endurance, solidarity and patriotism during the ordeal and claimed that any blackmail attempt was doomed to fail.

Putin said an armed rebellion would have been suppressed.

"The organizers of the rebellion, betraying their country, their people, betrayed those who were drawn into the crime. They lied to them, pushed them to death, under fire, to shoot at their own," Putin said.

The Russian president noted that the majority of Wagner fighters were "patriots."

"I thank those soldiers and commanders of the Wagner Group who made the only right decision," Putin said. "They did not go to fratricidal bloodshed, they stopped at the last line."

Putin offered Wagner Group members who participated in the rebellion the option of joining the defense ministry or other law enforcement agencies or returning home.

-ABC News' Ellie Kaufman, Natalia Shumskaia, Tanya Stukalova and Anastasia Bagaeva

Russian President Vladimir Putin is slated to make public statements Monday evening, according to Russian media.

This will be his first public comment since the failed Wagner Group attempted rebellion.

-ABC News' Natalia Shumskaia and Ellie Kaufman

President Joe Biden spoke out addressed the Wagner Group's actions over the weekend.

He said the U.S. and its allies convened on Friday when the rebellion began.

"They agreed with me that we had to make sure we gave Putin no excuse, let me emphasize, gave Putin no excuse to blame this on the West or to blame this on NATO," Biden said at a news conference at the White House.

The president added that the incident was "part of a struggle within the Russian system."

-ABC News' Alexandra Hutzler

The Kremlin on Wednesday acknowledged for the first time that a plane carrying Yevgeny Prigozhin, mercenary chief of the paramilitary Wagner Group, was possibly downed on purpose.

Kremlin spokesman Dmitry Peskov told reporters that investigators are looking into the possibility that the 62-year-old Prigozhin was assassinated.

"It is obvious that different versions are being considered, including the version -- you know what we are talking about -- let's say, a deliberate atrocity," Peskov said when asked about the investigation.

The plane carrying Prigozhin and nine others crashed in Russia's Tver region on Aug. 23, killing everyone aboard, according to the press service of Russia's Federal Air Transport Agency.

The crash came about a month after Prigozhin led a chaotic armed rebellion that threatened the longstanding leadership of Russian President Vladimir Putin.

On Friday, Peskov denied speculation that the Kremlin was involved in the plane crash, calling the allegation an "absolute lie."

The crash investigation is being conducted by the Russian Investigative Committee as a domestic incident and Peskov said that allowing in international investigators "is out of the question."

-ABC News' Will Gretsky