Philadelphia’s police union is offering a $20,000 reward for information leading to the arrest of a suspect in the strange — and so far unexplained — shooting that injured two officers during the city’s annual July 4th fireworks display on the Ben Franklin Parkway. A city officer suffered a head injury and a Montgomery County sheriff’s deputy suffered a gunshot wound to the right shoulder in the shooting that erupted almost immediately during the fireworks display over Philadelphia Art around 9:45 p.m. Monday night. Both were treated and released from Thomas Jefferson University Hospital. They were identified Tuesday as City Police Officer Sergio Diggs, 36, and Deputy John Foster, 44. Diggs is a 13-year veteran of PPD. “We were inches away from planning a funeral for at least one brave, Philadelphia Highway Patrol officer when a bullet grazed his hat,” Fraternal Order of Police Lodge No. 5 President John McNesby said as he offered the reward money. “There are too many guns on our streets and too many individuals acting recklessly with these deadly weapons.” A photo provided to NBC10 by McNesby showed a bullet lodged in the officer’s cap and grazed the head. Inside the lid was a memorial card for a Philadelphia police chaplain who had recently died. A bullet, circled in red, can be seen lodged in the police hat of a Philadelphia officer recovering from a wound to his forehead, according to this photo provided by the Fraternal Order of Police union. “It’s amazing that the round stopped in his hat,” said Philadelphia Police Commissioner Danielle Outlaw. The head-grazing officer is a 36-year-old PPD highway patrol officer and the other is a 44-year-old Montgomery County sheriff’s deputy, the commissioner said. Both were part of the security detail for the festival, he said. McNesby echoed Outlaw in describing how incredible it is that the bullet stopped halfway through the cop’s hat. “The Philadelphia Highway Patrol officer was carrying a funeral card in his hat honoring our recently fallen priest, Father Steven Wetzel,” McNesby said. “Father Steve has always supported and advised our officers over the years and even now he still works wonders for our heroes.” Philadelphia Police Officer Sergio Diggs, a 13-year veteran, suffered a head injury from a bullet fired on July 4, 2022. MCSO Dept. John Foster and a Philadelphia police officer were injured by gunfire last night while providing security for the Fourth of July celebration. Foster and the officer were treated and released from the hospital The MCSO family thanks you for your well wishes and support. pic.twitter.com/S2xwzIjoTM — Montco Sheriff (@MontCoPASheriff) July 5, 2022 The gunman was not immediately arrested or identified. It was unclear if the officers were targeted or if they were hit during a “celebratory shooting” amid Fourth of July celebrations, Outlaw said. “The good news is that both officers have since been treated and released, and what really could have been a chaotic or destructive scene was not today,” he said. The shooting erupted around 9:47 p.m. near the Philadelphia Museum of Art during the finale of the 16-day Wawa Welcome America festival, as crowds of people watched a fireworks show following a concert headlined by Jason Derulo in the park, police said. The gunfire hit officers along the 2500 block of Spring Garden Street, behind where the concert took place, Outlaw said. Several people could be seen running from the area. Police instructed people in nearby buildings to evacuate. “I didn’t hear the gunshots, but the officers were like, ‘Run, run, run,’” one woman told NBC10. Meanwhile, on Tuesday afternoon, Mayor Jim Kenney apologized for comments he made shortly after the shooting. He had said he was looking forward to a time when he would no longer be mayor. Several elected city officials characterized Kenney’s remarks as a lack of leadership amid a gun violence crisis, including a city councilor who called for Kenney’s resignation. “When I express that frustration and people respond to it the way they did, it’s understandable,” Kenney told NBC10. “But I’m still human and I have feelings and emotions and being mayor doesn’t make you a robot.” He added, “Again, I’m sorry for the disappointment, but I take my job personally and I take the problems we face personally. And I apologize for wearing my emotions on my sleeve.” NBC10’s Leah Uko was conducting an interview when people started running away from gunfire during a Fourth of July celebration. NBC10 had several reporters in the area covering the festival. Reporter Leah Uko reported a “wildcard” of people running towards the concert stage. Uko was interviewing a group of teenagers when an NBC10 cameraman captured the moments when people, including several visibly distressed children, began screaming and scattering. Fellow reporter Karen Hua reported that she was lying on the dirt inside a tent with other people. The shooting came the same day a gunman opened fire on a Fourth of July parade in the Chicago suburb of Highland Park, killing six and wounding dozens before he was arrested. Around 11 p.m., officers using flashlights could be seen sweeping an area near 19th Street and Park to Eakins Oval, a search that was not immediately fruitful. Several people sought refuge at the Park Towne Place apartments, which are located just outside the park. They asked residents to “remain calm” during police activity “on the ground, throughout the community”. All towers in the complex were on lockdown “until we have more information available,” the company said in an email. Two officers were shot during the Wawa Welcome America’s Party on the Parkway Monday night, police said. As the fireworks went off, thousands mingled, including NBC10’s Karen Hua, who detailed, from her perspective, the terror that gripped Center City. Residents were later allowed to return. Officers at the complex told an NBC10 producer that their investigation there turned out to be unrelated to the shooting. The Ben Franklin Parkway remained closed Tuesday morning as cleanup crews worked to clear the debris left behind. There are additional resources for individuals or communities who have experienced gun violence in Philadelphia. 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