Nearly five decades after a Honolulu teen’s body was discovered in her high school, DNA testing has led to the arrest of her ex-schoolmate for her brutal slaying. The body of Dawn Momohara,

Susie Chun Oakland arrived to a crime scene at McKinley High School in Honolulu that March morning nearly a half century ago.

Nearly a half-century after Dawn Momohara’s body was found, Gideon Castro, 66, was arrested in a Utah nursing home and charged with her murder.

Honolulu Police and the Unified Police of the Greater Salt Lake say they have arrested a 66-year-old man in a Utah nursing home in connection to a Hawaii murder nearly 50 years ago.

Honolulu Police say modern forensic tests allowed them to identify and arrest a suspect in Dawn Momohara's 1977 murder.

Dawn Momohara was 16 years old when her body was found on the second floor of McKinley High School in Honolulu in 1977. For decades, detectives had failed to identify a suspect in the murder case but now, thanks to a breakthrough in DNA technology, they have arrested a former classmate, police confirmed.

DNA testing has led to the arrest of a former classmate of a Hawaii high school sophomore who was found dead at the school on March 21, 1977. The Honolulu Police Department announced the arrest of Gideon Castro,

Dawn Momohara was 16 years old and a student at McKinley High School in Honolulu when she was found murdered on March 21, 1977.

The murder of a Honolulu teen in 1977 was solved after an arrest was made thousands of miles away. The body of 16-year-old Dawn Momohara was found at McKinley High School

HPD investigators flew to Utah and covertly acquired a DNA sample ... He told her he was in the U.S. Army Reserve and had come home to Honolulu. William Castro was also interviewed by police ...

COURTESY HONOLULU POLICE DEPARTMENT Victim Dawn Momohara in 1977. 1 /2 COURTESY HONOLULU POLICE DEPARTMENT Victim Dawn Momohara in 1977. COURTESY HONOLULU POLICE DEPARTMENT A composite drawing of the suspect in the 1977 murder of Dawn Momohara.

The suspect in a 1977 case, Giddeon Castro, was arrested for sexually assaulting and strangling 16-year-old Dawn Momohara at McKinley High School.