please advice and action need to be taken for below query.
1) Mother who is having property which she got from her own parents and having one son one daughter.
2) husband is alive but did fraud with her as he got second marriage without giving her divorce which is illegal as per Hindu marriage act.
3) now how can son and daughter can claim their mother property after her death and No will or deed made .
What is the procedure of to follow to claim property and can notice to her husband as illegal marriage act fraud etc
