1. Offender contracted marriage;
2. He knew at the time that –
   a. The requirements of the law were not complied with; or
   b. The marriage was in disregard of a legal impediment.

Circumstance qualifying the offense: if either of the
contracting parties obtains the consent of the other by means
of violence, intimidation or fraud.

Bigamy is a form of illegal marriage. Illegal marriage includes
also such other marriages which are performed without complying
with the requirements of law, or marriages where the consent of
the other is vitiated, or such marriage which was solemnized by
one who is not authorized to solemnize the same.