FREMONT (CBS SF) — Police in Fremont were investigating a home invasion and shooting at a marijuana grow house early Monday morning that left one person injured.

According to authorities, Fremont Police dispatch received three 911 calls reporting shots fired at 1:37 a.m. Monday morning in the area of Fremont Boulevard and Delaware. One man reported being woken up by loud yelling before hearing several shots fired and a vehicle leaving the area at a high speed.

Patrol officers responded to the neighborhood, but could not find any evidence of a shooting.

However, at about 2:17 a.m., a hospital in San Leandro called police to advise a shooting victim – a 28-year-old male from Oakland – had been admitted to their emergency room with a gunshot wound. The victim had sustained one non-life threatening gunshot wound and was expected to survive.

The victim told police that he had been shot during an attempted home invasion at a Fremont residence.

During the course of their investigation, police learned that the shooting had occurred at a residence in the 42900 block of Fremont Boulevard near the cross street of Delaware.

Police arrived at the location and found evidence of a shooting, including a trail of blood on the driveway and what appeared to be damage caused by a projectile to the windshield of a vehicle parked in the street.

Inside the residence, authorities found a sophisticated, large-scale indoor marijuana grow. The entire house had been converted to a marijuana grow with hundreds of plants growing at all different stages. The windows of the residence had been boarded up and an extensive ventilation and lighting system had been installed throughout the home to assist in the grow operation.

Fremont marijuana grow operation (Fremont Police Department)

Fremont marijuana grow operation (Fremont Police Department)

Based upon current information, Fremont police believe the sound of shots fired reported around 1:30 a.m. stemmed from an exchange of gunfire between the victim and his associates tending to the marijuana grow and two to three masked men attempting to enter the residence.

“The shooting happened in the font of the house and the back of the house,” said Fremont police spokeswoman Geneva Bosques. “We believe it was due to the suspects wanting the plants or wanting cash.”

Evidence at the scene suggests that at least eight rounds were fired from at least two different firearms.

Police had little information regarding the suspects other than that they were described as two to three males wearing masks and all black clothing. The suspects fled the area in an unknown vehicle southbound on Fremont Boulevard towards Auto Mall Pkwy.

Fremont police are investigating the shooting and home invasion while the Southern Alameda County Major Crimes Task Force is investigating the indoor marijuana grow.  Anyone with information about this incident is asked to please contact Detective J. Blass at 510-790-6963.