A Chicago police officer and a 16-year-old boy were accidentally shot by the same bullet during a chaotic scene Thursday afternoon in Englewood, according to police officials. Chicago Police Supt. Larry Snelling, who spoke to reporters outside the University of Chicago Medical Center about 4 p.m., said the shooting was an "accident." Officers were conducting an "investigatory stop" involving a 16-year-old in the 5600 block of South Shields Avenue about 12:30 p.m. when they realized he had a gun in his waistband, according to police. When an officer reached to grab the gun, it “inadvertently” went off, with the bullet hitting the teenin the groin and then the officer in the leg, Snelling said. One shell casing was recovered."The wounds were through and through," Snelling said. Both, including the officer who has been with the force since 2010, were in good condition Thursday afternoon, according to Snelling. The teen is recovering at Stroger Hospital and the officer at the University of Chicago. “It's an extremely dangerous job when we look at people who are armed with weapons," Snelling said. "Every one of those encounters has the potential to end with deadly force on either side, on both sides. So lives are always a danger when officers are encountering individuals who are carrying guns illegally.” Mayor Brandon Johnson, who delivered remarks after Snelling, didn't take questions from reporters. “This is yet another example why it's important that law enforcement has all the tools it needs in order to provide the type of safety and security Chicago deserves," Johnson said. "It’s also more evidence of why critical investments in this moment for our young people is crucial to build a better, stronger, safer Chicago," Johnson said. He added there are "too many people who have access to guns, and that's something that is not just a citywide problem but a national problem. Our commitment is still the same in my administration to make sure that we're doing everything in our power to ensure that young people, in particular, have the opportunity to fulfill their purpose."According to sources, another officer applied a tourniquet to the wounded officer as his partners rushed him in a police car to the hospital. The teen was arrested, sources said. He was taken by Chicago Fire Department ambulance to Stroger, where his condition as of 2 p.m. had "stabilized," fire department spokesman Larry Langford said. Both were alive and talking, and neither appeared to suffer life-threatening injuries, according to sources. The Jesse Sherwood elementary school, 245 W. 57th St., is located near the shooting scene but as of 2 p.m. no students were nearby. According to Safe Passage employees, the kids remained in the school, which gets out at 4 p.m. Late Thursday afternoon, dozens of patrol officers and detectives remained on the scene of the shooting.Meanwhile, about a dozen people who appeared to be police supervisors and other officers stood by outside the ambulance bay at the University of Chicago Medical Center. At Stroger, a handful of senior officers were seen walking in and out of the emergency room. Earlier, Snelling spent about 40 minutes at the scene, chatting with street officers and stepping into the command van briefly before getting back into a black SUV around 3:20 p.m.At the media briefing, Snelling said the Civilian Office of Police Accountability is investigating the shooting. “We make sure that there's transparency here, because it is a shooting where someone was shot, we want to make sure that it's investigated properly.”