The defendants in the case - Anthony Legaspi, John David Salazar, Adrian Powers and Jose Ramon Lara - all stood before Judge Kenneth Barr on Friday in San Bernardino Superior Court as lawyers scheduled a preliminary hearing for May 31, according to court records.
At the preliminary hearing, a judge will hear witness testimony and review evidence to determine if sufficient probable cause exists to hold over the defendants for trial on the charges.
The defendants return to court May 29 to determine whether they are ready for the hearing two days later.
Quinn McCaleb, 17, and Andrew Jackson, 16, were fatally shot at 7 p.m. Jan. 5, 2011, on the playground at the Cinnamon Creek Apartments on Oxford Drive, near Post Street, according to Redlands police.
Two others were wounded, including Jordan James Howard, who was shot in the eye. A fifth person escaped unhurt.
The four suspects were arrested by Redlands police on March 1. All four are documented gang members, police said.
According to the criminal complaint filed in San Bernardino Superior Court, Legaspi is the suspected shooter.
Legaspi and Powers, both 18, and Salazar, 22, are each charged with two counts of murder, three counts of attempted murder, and gun and street-gang allegations. Lara, 28, is charged as an accessory to murder after the fact.
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