All police officers shall have the power:
1. To arrest, without process, all persons who break the peace or who are found violating any ordinance of the Village or any criminal law of the State;
2. When a criminal offense has in fact been committed, to arrest, with or without process, any person that he or she has a reasonable ground for believing committed such offense;
3. To commit arrested persons for examination;
4. If necessary, to detain arrested persons in custody overnight or on Sunday in the Village jail or any other safe place until they can be brought before a Judge or Associate Judge of the Circuit Court.
All police officers shall have the power and authority and it shall be their duty to serve and execute warrants and other process in the Village for the summoning, apprehension and commitment of any person charged with violation of any provision of this Chapter or with any crime or misdemeanor or offense against the laws and ordinances of the Village or State of Illinois.