If you have committed a crime in or outside Canada you may not be eligible to become a Canadian citizen for a period of time. For example if you:
are in prison, on parole or on probation in Canada, or are serving a sentence outside Canada,
have been convicted of an indictable offence in Canada or an offence outside Canada in the four years before applying for citizenship, or
are charged with, on trial for, or involved in an appeal of an indictable offence in Canada, or an offence outside Canada.
Time in prison or on parole does not count as time you have lived in Canada. Time on probation also does not count if you were convicted of a crime.
Indictable offences — These are more serious and include theft over $5,000, break and enter, aggravated sexual assault and murder.