A “pocket warrant” is sanctioned by Section 15.03(a)(2) of the Texas Code of Criminal Procedure, where an arrest warrant can issue “when any person shall make oath before the magistrate that another has committed some offense against the laws of the State.” It does not require that the person also request that the magistrate file a formal criminal charge. Thus, the arrest can take place before the suspects are aware that they are wanted for the crime, and the complaint can be filed after they are taken into custody. Contact a criminal defense attorney as soon as possible is advise, as a lawyer may be able to help buffer the situation.