Miss. R. Crim. P. 17.4

(a) Alibi Defense.

(1) In General. Upon the written demand of the prosecuting attorney stating the

time, date, and place at which the alleged offense was committed, the defendant

shall serve within ten (10) days, or at such other time as the court may direct,

upon the prosecuting attorney, a written notice of the intention to offer a defense

of alibi, which notice shall state the specific place(s) 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 ten (10) days thereafter, but in no event less than ten (10) days before the

trial, unless the court otherwise directs, the prosecuting attorney shall serve

upon the defendant or the defendant’s attorney a written notice stating the names

and addresses of the witnesses upon whom the State intends to rely to establish

the defendant’s presence at the scene of the alleged offense and any other

witnesses to be relied on to rebut testimony of any of the defendant’s alibi

witnesses.

If, prior to or during trial, a party learns of an additional witness whose identity,

if known, should have been included in the information previously furnished,

the party shall promptly notify the other party or the other party’s attorney of the

name and address of such additional witness.

(2) Effect of Failure to Comply. Upon the failure of either party to comply with

subsection (a)(1), the court may use such sanctions as it deems proper,

including:

(A) Granting a continuance;

(B) Limiting further discovery of the party failing to comply;

(C) Finding the attorney failing to comply in contempt; or

(D) Excluding the testimony of the undisclosed witness.

(3) Additional Provisions. Subsections (a)(1) and (a)(2) do not limit the

defendant’s right to testify in the defendant’s own behalf.

(b) Insanity Defense.

(1) In General. If a defendant intends to rely upon the defense of insanity at the

time of the alleged crime, the defendant shall, within the time provided for filing

pretrial motions or at such later time as the court may direct, serve upon the

prosecuting attorney and the clerk of the court a written notice of the intention

to offer a defense of insanity.

Within ten (10) days thereafter, but in no event less than ten (10) days before the

trial, unless the court otherwise directs, the defendant shall serve upon the

prosecuting attorney the names and addresses of the witnesses upon whom the

defendant intends to rely to establish the defense of insanity.

If a defendant intends to introduce expert testimony relating to a mental illness,

defect, or other condition bearing upon the issue of whether the defendant had

the mental state required for the offense charged, the defendant shall, within the

time provided for the filing of pretrial motions or at such later time as the court

may direct, serve upon the prosecuting attorney and the clerk of the court notice

of such intention, with the names and addresses of such expert witnesses upon

whom the defendant intends to rely.

The prosecuting attorney shall serve notice on the defendant promptly, but in no

event less than ten (10) days prior to trial, stating the names and addresses of

any witnesses upon whom the State intends to rely relating to the issue of the

defendant’s mental condition at the time of the alleged offense or the

defendant’s mental state required for the offense charged.

If, prior to or during trial, either party learns of an additional witness whose

identity should have been included in the notice under this rule, the party shall

promptly notify the other party or the other party’s attorney of the name and

address of such additional witness.

(2) Effect of Failure to Comply. If there is a failure to comply with the

requirements of subsection (b)(1), the court may use such sanctions as it deems

proper, including:

(A) Granting a continuance and/or assessing costs against the

appropriate attorney or party;

(B) Limiting further discovery of the party failing to comply;

(C) Finding the attorney failing to comply in contempt; or

(D) Excluding the testimony of appropriate witnesses.

(c) Exceptions. For good cause shown, the court may grant an exception to the

requirements of sections (a) and (b).