Yes. Anyone can be arrested anywhere, at any time, for any legallly valid reason. Just because that individual is a juvenile does not afford them any special privileges to prior notification.
You can be arrested and detained without a warrant. A criminal attorney can give you some help, and if you have been arrested, you should consult one immediately.
Yes.
Yes.
When the person named in the warrant is arrested, he will be held without bail.
Yes they can search it
Yes i you have a warrant, but not technically.
A warrant is an order for an arrest issued by the court. But many arrests do not need a warrant. If you punch someone in the face, and police are called, you will be arrested without a warrant, and one will not be needed. If say, you failed to show up in court, then a warrant for your arrest will be issued, to alert all officers that you should be arrested on sight. So the warrant itself is not the thing 'allowing' you to be arrested.
Secret/Sealed indictments are handed up by a Grand Jury at the conclusion of the District Attorney's presentation if the Grand Jury finds that there is probable cause a crime has been committed. Grand Jury proceedings are secret. Contact the local District Attorney to may arrangement for an arraignment without an arrest warrant having to be issued.
Report it to the police and get an attorney (lawyer).
Kind of unlikely. If/When they run your name into the sytem to check on you, the warrant will probably show up, and you'll be arrested.
"Non-bailable Warrant" means that a person arrested shall not be automatically entitled to be released on bail, unlike the Bailable Warrant, where the arrested person has an inherent right to be released on a suitable bond, upon the arrest. It however needs to be known the court may or may not order the person arrested under a Non Bailable Warrant, to be released on a suitable bail - with or without any conditions.
Most likely a bench warrant will be issued and the person will be arrested.