Burlington - A 12-year-old boy who reported shots fired at his eastern Colorado home was in custody Wednesday after officers arrived to find his parents dead and two of his siblings in critical condition.

The boy called 911 Tuesday evening to report at least three people had been shot at his Burlington home, said Steve Johnson of the Colorado Bureau of Investigation.

When officers arrived, they found the bodies of 50-year-old Charles Long and his wife, 51-year-old Marilyn Long. Two of their children were wounded - a 5-year-old girl and a 9-year-old boy.

It was unclear whether the 12-year-old suffered any injuries.

Warrants in the case were sealed, and authorities weren't discussing possible motives. Investigators referred the case to prosecutors for possible filing of charges.

Johnson said there are no other suspects, and there's no reason to believe there's a continuing risk to the community of about 3,700 near the Kansas border.

Less than 24 hours after the shootings, friends gathered for a candlelight vigil Wednesday evening on the sidewalk in front of the family's house on a corner lot.

They said the Long children were homeschooled and the family was deeply religious, attending one neighborhood church on Saturdays and another on Sundays.

"You'd always see them around town, volunteering for stuff," said Ronnie Speakman, who was at the vigil with about six other people who said they knew the family. "He worked for Frito-Lay and you would always see him stacking chips in the aisle, always a smile on his face."

The Longs would plant flowers around town during the spring, and they participated in a community project a few years ago that involved building a park, friends said.

Two blocks away at the Evangelical Free Church, which the family attended, Pastor Ron Lee told more than 100 people at a prayer service that the gathering was meant as an opportunity for prayer and encouragement while members grieve.

"Most of it is confusion," Lee said. "I don't understand exactly what's gone on or why. Some of the reports that have come out, I'm not sure I even believe it."

Earlier, Lee told The Denver Post the Longs' 12-year-old son was involved with church activities, including being a greeter and working with audio and video equipment.

"He's the sweetest kid," Lee told the newspaper. "He is very helpful. He's got a very pleasant personality."