The Stockton Police Department is tirelessly working a homicide investigation.
Police say a former Stockton police officer allegedly died at the hands of 59-year-old Rafael Watts Tuesday morning.
Now the department is piecing together exactly what caused the confrontation.
An autopsy completed Wednesday afternoon showed Laurits "Pepe" Petersen was not only allegedly stabbed by Watts but also shot.
The brutal death of the 75-year-old former homicide detective hit the department hard.
"He still kept in contact with homicide victims' families. He would visit them on Christmas and birthdays and bring them presents. That tells you the type of person who we lost. It's a sad day here at the PD," said Joe Silva, spokesperson for the Stockton Police Department.
Investigators said Watts stabbed and shot Petersen on Tam O' Shanter Drive across from Cortez Park. A good Samaritan who jumped in to break up the attack was also stabbed, but was not shot.
Watts left the scene of the attack armed with a gun, according to investigators. That's when a K-9 caught up to him and bit him. The suspect is at the San Joaquin County jail and is facing homicide charges.
Police don't know if Petersen and Watts knew each other or what led to the altercation. They're calling on witnesses for help.
The good Samaritan is a 59-year-old man. He's being treated for his injuries at an area hospital but is expected to survive.