PITTSBURG — Two people were shot and killed during a possible interrupted burglary attempt Friday night at a home that was the subject of a home-invasion robbery attempt earlier this week, police said.

Police responded to a report of a shooting shortly after 9 p.m. in the 1000 block of Jewett Avenue, Pittsburg Police Capt. Ron Raman said in a statement. Raman said the homeowner had shot and killed two people.

Raman said four people had been arrested during a home-invasion robbery attempt at the home earlier this week. Investigators said they do not know if the two incidents are related.

Police and detectives were on the scene Friday night.

On Saturday afternoon, neighbors said they were alarmed by the incident, which was rare for their working-class, typically peaceful, neighborhood.

“It’s absolutely scary,” said Valarie Tafoya, who lives nearby. “I grew up around here, and it’s always been a good place to live.”

Hilda Porter, a neighbor, said the homeowner and his family were very friendly.

“I just hope they are doing all right,” she said. “It’s very quiet here. But things have happened in this neighborhood, that make you uneasy.”

Darrell Manful, a neighbor who knows the homeowner, wondered what the connection between the home invasion from earlier in the week and Friday’s shooting might have been.

“There’s no way of knowing,” he said. “They broke in and ransacked the place, and maybe they saw something they liked and came back.”

“If I was in his position, I would have done the same thing,” he said.

Anyone with information about this incident is encouraged to call Pittsburg Police at 925-646-2441.

Contact Katrina Cameron at 925-945-4782. Follow her at Twitter.com/KatCameron91.