TRENTON, N.J. (CBSNewYork/AP) — A Maryland man has been charged with attempted murder after prosecutors said he stabbed his ex-girlfriend at a Subway restaurant in New Jersey.

Yoon Choi, 48, was indicted by a grand jury on March 27, according to the Mercer County Prosecutor’s Office.

READ MORE: Former Gov. Andrew Cuomo Charged With Misdemeanor Forcible Touching

Choi’s attorney said the Silver Spring, Maryland resident plans to plead not guilty and that he will request a psychological evaluation. He claims Choi suffered a “temporary relaxation of his mental facilities” during the incident.

The 44-year-old victim, who is from Connecticut, suffered extensive blood loss, nerve damage and had to undergo multiple surgeries to repair her esophagus following the stabbing in Hamilton last December.

READ MORE: 'Survivor' Contestant Michelle Yi Describes Frightening Santa Monica Assault

Choi was charged with first-degree attempted murder and weapons offenses. He is being held at the Mercer County Correction Center on $750,000 bail.

(TM and © Copyright 2015 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2015 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)

MORE NEWS: Fantasy Football Start Or Sit Week 8: Can Kirk Cousins Put Up Points On The Cowboys Defense?