N.J. Ct. R. 3:12-2

(a) Alibi. If a defendant intends to rely in any way on an alibi, within 10 days after a written demand by the prosecutor the defendant shall furnish a signed alibi, stating the specific place or places at which the defendant claims to have been at the time of the alleged offense and the names and addresses of the witnesses upon whom the defendant intends to rely to establish such alibi. Within 10 days after receipt of such alibi, the prosecutor shall, on written demand, furnish the defendant or defendant's attorney with the names and addresses of the witnesses upon whom the State intends to rely to establish defendant's presence at the scene of the alleged offense. The trial court may order such amendment or amplification as the interest of justice requires.

(b) Failure to Furnish. If the information required in paragraph (a) is not furnished, the court may refuse to allow the party in default to present witnesses at trial as to defendant's absence from or presence at the scene of the alleged offense, or make such other order or grant such adjournment, or delay during trial, as the interest of justice requires.