A Massachusetts woman's murder trial is ongoing, with her ex-husband testifying about a tragic event. He has taken the stand to discuss the day she was involved in the deaths of their three children. The ex-husband's testimony is a part of the trial, but details about what he said are not available here.

For more information about the case and his statements, readers can refer to the source. Further details about the trial and the events surrounding the deaths of the children can be found through local news sources, including ABC7 Los Angeles.