SAN DIEGO (CBS 8) - A memorial service will be held Friday for a 12-year-old boy, stabbed in the heart, allegedly by a 10-year-old friend involved in a fight.

Ryan Carter of El Cajon was reportedly killed at the suspect's home last week.

The suspect pleaded "not true" to murder charges and remains in juvenile hall.

Ryan's memorial is set for 10 a.m. Friday, at Foothills Christian Church in El Cajon.