Updated

Two reputed Los Angeles gang members have been charged in a Halloween shooting that killed a 5-year-old boy as he showed off his costume in his backyard.

Eighteen-year-old Marcus Denson and 21-year-old Leonard Hall were charged Monday with murder and attempted murder. Prosecutors say they could face life in prison if convicted.

A judge delayed the pair's arraignment until Nov. 19 and ordered them held on $4 million bail apiece.

Prosecutors contend the men fired into a South Los Angeles backyard they mistakenly believed belonged to a rival gang. Aaron Shannon Jr. was shot in the back of the head Oct. 31 as he posed for photos in his Spider-Man costume. Two relatives were wounded.

Authorities say the victims had no gang ties.

THIS IS A BREAKING NEWS UPDATE. Check back soon for further information. AP's earlier story is below.

LOS ANGELES (AP) — Two reputed gang members have been charged with murder for a Los Angeles Halloween shooting that killed a 5-year-old boy as he showed off his costume in his backyard.

Eighteen-year-old Marcus Denson and 21-year-old Leonard Hall were charged Monday with murder and attempted murder. Prosecutors say they could face life in prison if convicted.

The two remained jailed Monday without bail.

Prosecutors contend the men fired into a South Los Angeles backyard they mistakenly believed belonged to a rival gang.

Five-year-old Aaron Shannon Jr. was shot in the back of the head on Oct. 31 as he posed for photos in his Spider-Man costume. Two relatives were wounded.

Authorities say the victims had no gang ties.