If it’s a spectacular failure (someone who doesn’t like at all like the criminal) he’ll be let go right away. If there’s a reasonable resemblance, it would be as if some person reported the guy manually to the police.
>The general rule is that arrest records are public records. However, each state can determine whether they wish for such records to be readily available to the public. [1]
>Arrest records are generally open to the public unless they concern an active or ongoing investigation.[2]
>Since the arrest record is public, anyone can access the information by going to the jurisdiction’s government website. Also, anyone can obtain the arrest record by going to the county clerk’s office in person.[3]
When traveling to e.g. the USA arrests have to be declared on the online visa waiver. Similar for other countries. I have no idea what happens if you have any arrests but I assume it is not totally convenient. Even if your record might be sealed/not public in your countries does not mean you can ignore this section of the form.
NB that being arrested once can hinder someone from getting Visas or jobs in the future and can result in social exclusion.