LOS ANGELES, July 13 (Xinhua) -- Two more defendants were sentenced Friday for the 2014 killing of Ji Xinran, a Chinese graduate student at the University of Southern California (USC).

A photo of murdered USC graduate student Ji Xinran, 24, from China, is seen next to flowers at his memorial service on the USC campus in Los Angeles, California August 1, 2014. (Photo: VCG)

Alejandra Guerrero, 20, was sentenced to life in prison without the possibility of parole, while her co-defendant Jonathan Del Carmen, 23, was given a term of 15 years to life.

Guerrero was convicted in October 2016 of one count each of first-degree murder, robbery, attempted robbery and assault with a deadly weapon. Del Carmen pleaded guilty last year to one count of second-degree murder.

On July 24, 2014, Guerrero, Del Carmen, Andrew Garcia, and Alberto Ochoa attempted to rob Ji when the Chinese student was walking home from a study session.

Garcia eventually caught up with Ji and hit him repeatedly with a baseball bat. Ji made his way back to his apartment, and was found dead hours later by his roommate.

In August 2017, Garcia, now 22, was sentenced to life in prison without the possibility of parole after convicted by jurors on one count each of first-degree murder, robbery, attempted robbery and assault with a deadly weapon.

Ochoa, now 21, the fourth defendant in this case, is still awaiting his trial.