Supreme Judicial Court, June 18, 2014

When the Commonwealth intends to rebut defense counsel's psychiatric expert evidence concerning the mental state of the defendant, after being so notified of such a defense pursuant to rule 14(b)(2)(A), with expert psychiatric evidence obtained apart from an examination under rule 14(b)(2)(B), the Commonwealth must comply insofar as practicable with the requirements of rule 14(b)(2)(B), treating its other psychiatric evidence as though it had been obtained pursuant to the rule.