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Suspects charged with murder, attempted murder in deadly Southside shooting

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OCTOBER 08, 2022

Update 10/28/22: This story has been updated to include charging information from the Alameda County District Attorney’s Office.

Update 10/27/22: This story has been updated to include new arrest information from Berkeley police.

Update 11:52 a.m.: This story has been updated to include additional information from UC Berkeley spokespeople.

Update 10:36 a.m.: This story has been update to include additional information from Berkeley police about the condition of the victims.

Three suspects were arrested and charged in connection to an early morning Southside shooting on Oct. 8 that left one dead and three injured, according to the Alameda County District Attorney’s Office.

Andy Gutierrez-Rebollo and Michael Monrroy-Ramos were each charged with murder and first-degree attempted murder, and Jessyca Monrroy was charged with accessory after the fact and grand theft. All three are currently in custody.

The Oct. 27 Nixle alert announced that Berkeley Police Department, or BPD, detectives and the U.S. Marshals Northern California Fugitive Task Force carried out arrests and search warrants on Oct. 25, during which the task force found numerous firearms including several unserialized “ghost guns.”

The gunfire was reported near Durant Avenue and Telegraph Avenue around 1:35 a.m., according to an updated Nixle alert.

According to the alert, a fight broke out and people fled after gunshots were fired.

As of 5:49 a.m. the area was pronounced all clear, according to a UC Berkeley WarnMe alert. The WarnMe alert noted that none of the individuals involved were UC Berkeley students.

The gunfire resulted in the death of 29-year-old Isamaeli Mata’afa and the injury of three of his family members.

Campus spokesperson Janet Gilmore said UCPD is assisting BPD with the case “as needed.” Officials are also reviewing ways to increase security around campus, Gilmore added.

On Oct. 15, campus announced increased security in Units 1, 2 and 3 seven days a week as campus works to hire new student security officers and fills UCPD vacancies.

According to Gilmore, campus officials worked to gather information about the shooting and took steps to provide resources and support to students and others who may have witnessed or heard the shooting.

“This shooting was one of the most horrific acts of violence our community has experienced in recent memory,” the Nixle alert read. “We are thankful we were able to bring those responsible for the violence to justice and we are grateful for the community’s continued support.”

Check back for updates.

Contact Riley Cooke at  or on Twitter


OCTOBER 28, 2022