4 People Stabbed at Home in Montebello

Attack Investigator said that it was stemmed due to family argument 

The suspected attacker is in police custody 

Police found one of the victims suffering from stab wounds in the front yard  

All victims are transported to a local hospital 

One victim is in serious condition requires immediate surgery

Police is trying to  figure out what led to the argument 

It's still unclear how many suspects may be involved

The condition of all the victims is unknown at this moment