There are new questions about whether Freddie Gray's arrest was legal or illegal, and it could come down to the knife he was carrying.

Peter Doocy reported on tonight's "On The Record" that Baltimore State's Attorney Marilyn Mosby said that Gray's  arrest was illegal because the knife he was carrying was legal.

Now, one of the six officers charged in Gray's death says Mosby is wrong, Doocy reported.

Attorneys for Officer Edward Nero filed a motion Monday explaining that Gray's knife had a spring-loaded blade that released with the flick of a wrist.

"In other words, the kind of weapon that would earn anyone a trip to jail in this city, including Freddie Gray," Doocy said.

Doocy explained that Nero, who is charged with second-degree assault, misconduct in office and false imprisonment, now wants Mosby to produce the knife to show the world that it is not legal.

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