TITLE IX. GENERAL PROVISIONS
Rule 43. Defendant's Presence
(c) Waiving Continued Presence.
(1) In General. A defendant who was initially present at arraignment, or whose appearance at the arraignment was waived under Rule 10, waives the right to be present under the following circumstances :
(A) when the defendant is voluntarily absent during trial, regardless of whether the court informed the defendant that failure to appear after arraignment may be deemed a waiver or forfeiture of the right to be present during the trial and that the trial will continue in the defendant's absence ;
(B) when the defendant is voluntarily absent during sentencing ; or
(C) when the court warns the defendant that it will remove the defendant from the courtroom for disruptive behavior, but the defendant persists in conduct that justifies removal from the courtroom.
Fair trial standards
Trials in absentia
Rights during trial - present at trial
Disruption of trial - removal of the accused
EDIT.