Can a person be prosecuted for threats in ...

If you are threatened, contact the law enforcement authorities - this is a record of your problem, which can help in the future.

If it is necessary to prosecute this person, then legally it is possible to attach to other articles to qualify the offense. For example, a threat to kill, if such threats are heard in the messages addressed to the persecuted person, or something else. Or violation of privacy, if we are talking about crimes, the component of which is illegal storage, collection, use, destruction, distribution of confidential information about a person, or illegal change of such information. This can be linked if the harasser uses the victim's confidential information, such as: name, place of residence, mobile phone number, without the permission of the victim.