New surveillance video of the brothers implicated in the alleged attack on "Empire" actor Jussie Smollett corroborates their story that has been reported to news outlets by sources on the Chicago police force.

The development coincided with the announcement from the police that Smollett was officially being investigated as a suspect for filing a false report.

Ola and Abel Osundairo can be seen purchasing items that fit the description of the attack in a video first revealed to the public by Charlie De Mar of CBS-2 in Chicago.

The video shows at least one red hat and ski masks in the items the brothers purchased.

The brothers are cooperating with the police investigation and that they are accusing Smollett of orchestrating the attack and paying them to participate.

The lawyer for the brothers said to the media that they testified before a grand jury for two and a half hours about their part in the hoax.

Here's the video of the Osundairo brothers:

The alleged attack became a national sensation as many on the left blamed President Donald Trump on the basis that Smollett said one of the attackers yelled, "This is MAGA country!" as a reference to the president's campaign slogan.

Others expressed skepticism at some of the bizarre details of the account. Sources from the Chicago police have admitted to various news outlets that the investigation has changed its focus to whether Smollett planned the attack.

Smollett has denied having any part in planning the altercation, and has implied that the sources are lying about the facts of the case.

A representative for the Chicago police had said they would charge Smollett if they believed he filed a false report.

Here's the latest in the Smollett case: