San Francisco  - The family involved in the murder-suicide that shook California's Silicon Valley on Monday were recent immigrants from India, local media reports said Tuesday.

Six people, including the gunman, died in the horrific incident, but police declined to give any identifying details about the family until their relatives had been informed.

The San Francisco Chronicle and San Jose Mercury News reported that the gunman and his six victims were all from India - only one survived, his wife.

Police said the dead included the gunman's daughter, 4, and son, 11. A family from India visiting the shooter's wife was also killed - a man, 35, his wife, 25, and their 11-month-old daughter.

The baby survived for several hours, but was pronounced dead early Monday at a hospital. The gunman, 42, later shot himself.

The family had only recently moved into the rented property in the upscale development where the incident took place. The San Jose Mercury News reported that the gunman was an engineer who worked at Yahoo and who had previously been employed at Microsoft.

Santa Clara, a relatively wealthy city of just over 100,000 has traditionally been immune to extreme violence. But the recession that has hit California and the tech industry harder than the rest of the country may be taking its toll.

In November, an engineer who was fired from his job returned to the firm and shot and killed three colleagues at SiPort, a startup that makes wireless chips. (dpa)