New Orleans ( CNN ) -- New Orleans police arrested a second suspect in the Mother 's Day shooting that wounded 19 people this week , including three still in critical condition , authorities said Thursday . The two suspects are believed to be involved in gangs , police said . No further details were immediately available , authorities said . Meanwhile , the first suspect , Akein Scott , 19 , is facing 20 counts of attempted second-degree murder in the Sunday shooting , and his bail was set at $ 10 million during his first appearance in Orleans Parish Magistrate Court on Thursday morning , court records said . Scott 's next hearing is scheduled for July 16 . Among the three people still in critical condition from the shooting is a reporter , police said . A SWAT team was used during Scott 's arrest Wednesday night in east New Orleans , CNN affiliate WDSU reported . Police identified Scott as a suspect Monday after footage of the shooting was released . Images of the parade , released by police Monday , show a man standing at the outskirts of a packed parade route . A moment later , he charges toward the crowd . The surveillance camera images show the panicked crowd scrambling for cover . The man runs away , leaving people and bicycles scattered on the ground behind him . A $ 10,000 reward was offered in the case . The shooting , during a festive Mother 's Day parade , renewed concerns about crime in the city . It was the third holiday this year when guns have been fired into crowds , New Orleans Mayor Mitch Landrieu said . A January 21 shooting near a Martin Luther King Day parade left five wounded . Four people were hurt in a February Mardi Gras attack , the New Orleans Times-Picayune reported . CNN 's Chandler Friedman and AnneClaire Stapleton contributed to this report .
NEW : Both suspects are believed to be involved in gangs , police say . NEW : Police did n't provide further details on second suspect . NEW : First suspect Akein Scott faces 20 counts of attempted second-degree murder . NEW : Three of the 19 shooting victims are still in critical condition , police say .