Can a defendant be held liable for first degree murder in a provocative act murder case?

"To summarize, a defendant is liable for murder when the actus reus and mens rea elements of murder are satisfied. The defendant or an accomplice must proximately cause an unlawful death, and the defendant must personally act with malice. Once liability for murder is established in a provocative act murder case or in any other murder case, the degree of murder liability is determined by examining the defendant's personal mens rea and applying [Penal Code] section 189. Where the individual defendant personally intends to kill and acts with that intent willfully, deliberately, and with premeditation, the defendant may be liable for first degree murder for each unlawful killing proximately caused by his or her acts, including a provocative act murder. Where malice is implied from the defendant's conduct or where the defendant did not personally act willfully, deliberately, and with premeditation, the defendant cannot be held liable for first degree murder." (People v. Concha, supra, 47 Cal.4th at pp. 663-664.)