I'm sorry to hear that your friend is being harassed by a locked profile on Facebook. Unfortunately, identifying the person behind a locked profile can be quite challenging, as the privacy settings on such accounts are designed to keep the user's information hidden from others.
There are a few steps you can take to try to identify the person behind the locked account, but success is not guaranteed. Here are some suggestions:
1. Report the Account to Facebook: Encourage your friend to report the harassing account to Facebook. Facebook takes harassment seriously and may be able to take action against the account if it violates their community standards.
2. Gather Information: Encourage your friend to save any evidence of the harassment, such as screenshots of messages or posts. This information may be useful if further action is needed.
3. Contact Facebook Support: Your friend can try reaching out to Facebook support for assistance in dealing with the harassment. While they may not reveal the identity of the account holder, they may be able to take action against the account.
4. Seek Legal Help: If the harassment is severe or persistent, your friend may consider seeking legal assistance. They can consult with a lawyer to explore their options for dealing with the situation.
It's important to prioritize your friend's safety and well-being in this situation. Encourage them to take steps to protect themselves online and seek support from trusted individuals. Harassment is a serious issue, and it's essential to address it promptly and effectively.