SAN DIEGO (U-WIRE) – Four men were arrested Tuesday in Sacramento County in connection with the Oct. 4 stabbing death of 22-year-old Mesa College student Luis Felipe Watson dos Santos.

Santos was killed at approximately 2:55 a.m. on 55th St. in front of San Diego State University’s Parking Lot M when he and four friends became involved in a physical altercation in which Santos and two of his friends were stabbed and another was injured. Santos died at the scene.

Ryan Jett, Esteban Nuñez, Leshanor Thomas and Rafael Garcia-all 19 years old-were arrested at separate times on Dec. 2.

According to San Diego Police Capt. Jim Collins, Nuñez is the son of Fabian Nuñez, former speaker of the California State Assembly. None of the four men are from the San Diego area, but Collins said they were partying in San Diego the night Santos died.

One of the suspects, Collins said, has a relative in the San Diego area and another has friends in San Diego, but he did not specify which two have San Diego ties.

Investigators were led to Sacramento through a lead provided by an unnamed witness present the night of Santos’ death. According to Collins, San Diego Police Homicide Unit detectives traveled to the Sacramento area in October. Investigations continued until enough information was gathered to make a move on the four men, he said. “We just had warrants issued for their arrests yesterday,” Collins said.

Still in custody in Sacramento last night, the men are expected to be transported into San Diego County Jail today and will be charged with one count of murder and three counts of assault with a deadly weapon, Collins said.