On Saturday, police in Brooklyn continued to investigate a double stabbing on Friday night at an IHOP restaurant that left two men seriously wounded. Photo by Lloyd Mitchell Police in Brooklyn continue to investigate a double stabbing on Friday night at an IHOP restaurant that left two men seriously wounded. A person of interest is being questioned in connection with the violence that occurred at the chain eatery located at 11000 Flatlands Ave. in East New York just after 10:30 p.m. on Sept. 5.