Child custody establishment: Mother have been living with kids since last 5 years outside USA. Father in NJ, has schizophrenia and used to be abusive.

My marriage has been a troubled one. My husband lives in New Jersey, where I used to live in the past. I live and work in Bangladesh with our two sons- 10 and 9 years' old at present. I have been living here since end-2015. My husband kept making occasional visits to Bangladesh to meet the kids (4 times last 5 years). He also kept remitting some money for kids purpose. My husband has schizophrenia since 2012 and my marriage suffered through it. He was unwilling to see any doctor and there was no medical proof. Due to schizophrenia, my husband had hardship keeping his jobs since 2014. His abusive behavior were damaging my sanity and disrupting my own daily chores, including- managing kids and my job. At last during end-2015, I moved to my motherland Bangladesh, to get some support from my parents with my kids and to maintain a job here. I sent my kids to CA to visit relatives. I have plan to go to CA + NJ at mid-May. Now my husband took them to NJ and saying he'll keep them.