Police arrested a suspect in a 16-year-old homicide after a woman browsing the "most wanted" section of the Los Angeles Police Department website recognized a man she knew and called a tip line, authorities said.

Samuel Calvario, 45, was arrested last week in the shooting death of 31-year-old Daniel Felix in 2000 after he intervened in an argument between Calvario and his then-girlfriend, investigators said Wednesday.

The charges faced by Calvario include murder, assault with a firearm and kidnapping, according to the Los Angeles Times.

It wasn't immediately known if he has an attorney who could comment on the arrest and charges.

Officer Deen Alcaraz told the Times that Calvario eluded arrest for so long by assuming a new identity. The detective did not give details on where Calvario was living, other than to say he was in Los Angeles County.

Police are still trying to get into touch with the family of Felix.

Investigators said Felix saw Calvario and his girlfriend arguing inside a truck. When Felix intervened, Calvario became angry, pulled a gun and shot him, officials said.

The woman who recently spotted Calvario on the LAPD website left an anonymous message on a tip line about his whereabouts.

Alcaraz said he's never had a suspect identified by someone browsing the website. Still, he said the case underscores the role the public can play in solving crimes.

"This caller did a great justice," he told the newspaper. "Ultimately, the community is the one who provided the information that led to the arrest."