(Portland, OR)  --  The search continues for four armed carjacking suspects who prompted police to issue a shelter-in-place order for residents in Southeast Portland early this morning.  Police issued the order for residents between 122nd and 129th and between Tibbetts and Powell around 1 a.m. while officers conducted a yard-by-yard search for the suspects.  Police say the suspects robbed a person of their pickup truck just before 1 a.m.  Investigators managed to track the truck's location by tracking the victim's cell phone, which was left inside the vehicle, but when officers approached the truck, the suspects fled on foot.