Man dies of heart attack while in Montclair police custody

MONTCLAIR, Calif. (KABC) -- A man who was taken into custody after becoming combative with police on Thursday died of cardiac arrest.

Authorities responded to the 10300 block of Ramona Avenue in Montclair Thursday on reports of a disturbance and a person behaving strangely. The person, identified as Christian Siqueiros, 25, then became combative with police and was taken into custody.

Not long after being taken into custody, Siqueiros suffered a heart attack. He was treated at the scene by officers and was taken to Montclair Hospital, where he was pronounced dead.

The San Bernardino County Sheriff's Department is investigating the incident.