A Daly City woman accused of killing her ex-husband by throwing a pot of boiling water on him while he slept pleaded not guilty to murder in San Mateo County Superior Court Thursday.

Jesusa Ursonal Tatad, 40, was divorced from 36-year-old Ronie Tatad on the night of the attack on Nov. 26, 2011, though the two still shared an apartment together, according to the district attorney's office.

Tatad allegedly waited for her ex-husband to fall asleep and then went into his bedroom with a pot of boiling water and poured it over him, causing second- and third-degree burns over 60 percent of his body, prosecutors said.

When he jumped out of bed and ran into the bathroom, Tatad reportedly hit him on the head with a baseball bat, according to the district attorney's office.

The victim was able to run out of their apartment complex and flag down a security guard, who called 911.

He was taken to an intensive care unit at San Francisco General Hospital, where he remained in critical condition until succumbing to his injuries on Dec. 9.

Jesusa Tatad, who prosecutors believe was motivated by jealousy, was arrested shortly after the attack.

On Dec. 7, she pleaded not guilty to two counts of assault with a deadly weapon, domestic violence, aggravated mayhem, and torture.

Tatad is being held without bail and is due back in court to set a date for a preliminary hearing on March 26.