One of the legal heirs is been prevented from accessing father' s property after the demise of his father. Elder brother has locked the door and flew away. So isn't that a crime? Under what section of IPC he can be charged for criminal offense? How the criminal procedure can be started against him? Or what remedy the younger brother has to enter the house?
I do not think it attracts Criminal Law. The legal heir may consult a competent and reliable Lawyer and get a legal notice issued to the person preventing him from accessing the father's property, seeking partition of the property.
A litigant always wants remedy. Focus on permanent remedy as police may not involve themselves in civil issues. The property is not in your name, and the brother is a Trustee, and you can only exercise your rights and remedy through Civil litigation only.