LOS ANGELES, Calif. — Paramedics transported a 50-year-old man to the hospital in cardiac arrest after he was detained by officers for yelling, screaming and interfering with traffic at a South Los Angeles intersection, police said today.

The incident at the intersection of 51st Street and Wall, just east of Main Street, took place about 10:45 p.m. Monday, said Sgt. David Garland, watch commander at the Los Angeles Police Department’s Newton Station.

The unidentified man was standing in the street “screaming and yelling at traffic” when officers pulled up, Garland said.

“The officers placed the man in handcuffs and put him in a squad car while they investigated the incident,” Garland said. “While the man was in the patrol car he began to experience some severe health problems.”

Garland said paramedics were called to the scene and treated the man for cardiac arrest.

“Paramedics then transported him to USC Medical Center and we are still waiting for an updated report on his condition,” Garland said early this morning. “But I want to say the man was not arrested or in official custody when he got sick.”

Garland said the man was not homeless but may have been suffering from mental illness or a drug problem.

“But right now, our main concern is strictly with his medical condition,” Garland said.