Wechat message has been deleted. Will the investigation be overturned?

This information can be recovered by technology as long as you have a mobile phone. Public security organs can also find these chat records.

According to the provisions of Article 143 of the Criminal Procedure Law, when an investigator deems it necessary to seize the mail and telegram of a criminal suspect, he may, with the approval of the public security organ or the people's procuratorate, notify the post and telecommunications organ to submit an inspection report on the mail and telegram for seizure. When it is no longer necessary to detain, it shall immediately notify the post and telecommunications organs.