Residents near Mission Viejo High School were surprised to find sheriff's deputies with guns drawn Monday night around 6:30 p.m.
Five squad cars and two undercover sheriff's vehicles were parked in front of the school entrance at the corner of Pradera and Chrisanta.
Deputies confronted a felon with a warrant for his arrest, said Orange County Sheriff's Department Administrative Sgt. William McGovern.
McGovern said he didn't know if deputies had their weapons drawn, but "it wouldn't surprise me" given the nature of felony arrests.
When the alleged felon was spotted, Mission Viejo deputies assisted the Sheriff's Department warrant team to make the arrest, he said.
Although McGovern was unsure who was arrested, OCSD records indicate the Sheriff's Department hauled in only one man Monday on an arrest warrant.
That man was Juan Vidrio, a felon with a long arrest history that includes vandalism and street terrorism. Until he was arrested Monday, Vidrio had been a fugitive with charges involving spousal abuse, including assault with a deadly weapon.