In the media and movies, we always see witnesses, bystanders, and even the suspects talking to law enforcement (LE). In NO case, should you ever speak to LE unless there is absolutely NO possibility that they could some how implicate you or someone you care about (there are twenty witnesses who are videoing with their phones, listening to you talk to LE).
For example, see this law professor explaining that even criminal defense attorneys have been convicted on the basis of their own unrecorded "confessions".
https://www.youtube.com/watch?v=d-7o9xYp7eE&t=308s
If you or someone you know is on a jury, NEVER convict based on an unrecorded confession because they are usually made up. If they were actual confessions, law enforcement (LE) would have recorded it. Even recorded confessions are found to be false or coerced.
Someone I know, who was college educated, was convicted on a false confession where the DEA agent perjured himself several times, some of them easily proven false with documents. They actually recorded it but later claimed they did not. He remains convicted to this day.
Don't be caught in the same situation. At best, they can twist your words, at worst, they will simply make up what you said. In that person's case, the typed up report of his supposed confession was manufactured two weeks after his supposed confession and they arrested him almost THREE YEARS later.
Imagine this, someone comes up to LE and admit to crimes such as drug dealing, fraud, or violence...would they wait 3 years before arresting and stopping them. Well, it totally made sense to the jury because they convicted him and the judges have kept him convicted.
So don't make his same mistake. NEVER, EVER speak to LE because it will NEVER help you or your loved ones. You are under NO obligation to report any crime.
https://www.yahoo.com/news/john-oliver-reveals-why-never-093039970.html
They will say anything, including mislead you with lies & intimidation, to get you to help or speak to them. One example is that they will tell mothers that some trigger happy cop may shoot their son if they don't tell LE where their son is, the speaking LE will claim (s)he will make sure the son gets captured non violently. Make sure to tape record all conversations with LE.
Even if you are detained or arrested you are NOT required to speak to LE.