Oh, OK. In Colorado, as long as you had probable cause based on victim testimony, evidence, etc, you could make the arrest, even if you picked the suspect up at a different time or location. Sometimes you could even stretch it out a couple of days as long as you could show a continuous attempt to contact the actor (have an officer from the next shift try to locate/contact the person, etc). After that, though, it was forwarded for a warrant.
Every state has different nuances in their laws. That is why I always try to say (in Oklahoma) when talking about legal stuff.