The man charged with killing seven people at a Fourth of July parade in an upmarket Chicago suburb has confessed to the mass murder and revealed that he also considered attacking a second parade in Madison, Wisconsin, authorities said at a news conference on Wednesday. But, after deciding against another shooting, Robert Crimo, 21, drove back to Illinois, where he was later arrested, said Christopher Covelli, a spokesman for the Lake county major crime taskforce. “We don’t have information to suggest he planned to drive to Madison initially to commit another attack. We do believe he was driving around following the first attack and saw the celebration [in Madison],” Covelli said. The shooting in Highland Park on the day that America celebrates its independence has sent shockwaves through the US, even though the country is enduring a spate of such mass killings. Recent attacks include a shooting at a Texas school and the racist massacre of Black shoppers at a Buffalo, New York, supermarket. More details have emerged about the Highland Park attack as Ben Dillon, Lake county assistant state attorney, said in court that the gunman “looked down his sights, aimed” and fired at people across the street, killing seven and wounding more than two dozen. He left the shells of 83 bullets and three ammunition magazines on the rooftop. The gunman initially evaded capture by dressing in “women’s clothing” and blending into the fleeing crowd, Covelli said. An officer later pulled over Crimo north of the shooting scene several hours after police released his photo and warned that he was probably armed and dangerous. Dillon said Crimo confessed to the attack after his arrest on Monday evening. Crimo, who goes by the name Bobby, was an aspiring rapper with the stage name Awake the Rapper, posting on social media dozens videos and songs, some ominous and violent. Federal agents are poring through Crimo’s online profiles and his music. A preliminary examination of his internet history indicated that he had researched mass killings and had downloaded multiple photos depicting violent acts, including a beheading, a law enforcement official told the AP. But Covelli said at the press conference that he did not want to speculate on motives, saying, “his motivation isn’t necessarily clear”.