Friend's husband committed suicide, police harassing the witness

 Actually I am having a friend and she was divorced.she married to an unmarried boy who was an ordinary reporter also. 6 months back they got married in a temple. My friend told me to come so I was there just to support her. Only I was there n two more persons and a photographer was there. They always fought with each other. The Boy always tortured her about her past.and recently the boy committed suicide leaving a note against my friend. He told that he was dying because of her torture. His parents blamed the girl that she had murdered him. The girl is out of area. I was always talked to my friend till this incident happened on phone unknowingly. The police enquired me also and I am very much scared due to all these things. I am working in sbi.so I need legal support so that no one can harress me. Because after marriage what exactly happened I don't know. But the police may harress me. So I really need support. They were adult and both of them aged around 35.