With other accusers stepping forward, a former yeshiva teacher changed pleas yesterday on the third day of his New Jersey trial and admitted he sexually assaulted a 12-year-old boy while working as a camp counselor.

Rabbi Yosef Kolko, 36, shifted uncomfortably on the stand in the Toms River courtroom as he pleaded guilty to aggravated sexual assault, attempted aggravated sex assault, sexual assault and child endangerment. The abuse occurred from 2008 to early 2009 and ranged from fondling to oral sex.

The change in plea came after the prosecutor’s office was contacted Friday by two other alleged victims.