COLORADO SPRINGS, Colo. — Two children were killed after their older brother stabbed them in an early-morning attack Tuesday, the Colorado Springs Police Department said.

On Tuesday night, members of the community gathered to remember the two young children, and to try to make sense of what happened in their neighborhood.

Police responded to the 900 block of Carlisle Street about 1:10 a.m. where officers found three victims with apparent stab wounds. All three were taken to hospitals.

A 19-year-old suspect, identified as Malik Vincent Murphy, is in custody and has been charged with two counts of first-degree murder. No other suspects are being sought.

The suspect’s siblings, 5-year-old Sophia Murphy and 7-year-old Noah Murphy, suffered stab wounds to their necks and were later pronounced dead.

Police identified the victims Tuesday afternoon after an autopsy.

The children’s father, Jefferson Murphy, is being treated for nonlife-threatening injuries and is expected to survive.

He told police he was confronted by Malik after going to check on one of his children screaming.

There were other people inside the home at the time of the stabbing and police are working to determine their relationship with the victims and Murphy.

In a police document, Malik Murphy revealed he often had “homicidal ideations,” and planned to kill his family and bury them in the backyard so he could be alone at the home.

Anyone with information is asked to call police at 719-444-7000 or Crime Stoppers at 719-634-7867 or 800-222-8477.