If the criminal investigation involves a situation where there was a victim (i.e., an assault and battery case), it’s important not to contact or engage with the victim, as communications with the victim might be perceived as intimidation or coercion to get the victim to avoid testifying against you, or to avoid pressing charges altogether.
The State does not require the victim’s permission to press charges against you. Even if the victim does not wish to press charges against you, the State may choose to do so. Still, when a victim files a waiver of prosecution, this can have beneficial effects for your defense. An executed waiver of prosecution asserts that the official reports of the criminal incident are inaccurate, and can undermine the State’s prosecutorial efforts.