Two men suspected of trying to flee from officers were arrested Thursday in the Sonoma Valley in unrelated incidents, the CHP said.

In the first, Alexander Sandoval-Perez, 22, of Sonoma, is accused of leading officers on a 30-minute chase on his motorcycle after they tried to stop him about 2:15 p.m. for alleged traffic violations, Sgt. Diana McDermott said.

Officers said he accelerated to 90 mph on Arnold Drive and tried to hide but was located with the assistance of area residents, McDermott said.

He was taken into custody at Buckeye and Lawndale roads and booked on charges including attempting to evade with wanton disregard for public safety, driving on a suspended license and probation violation, she said.

About seven hours later, officers on Highway 121 near the Napa County line saw a 2008 Toyota Corolla going 80 mph and attempted to pull it over, McDermott said.

The car sped up, leading officers on a three-minute chase before crashing into a metal guard rail at Highway 29, she said. The driver, Stephen Reeder, 38, of Ventura, fled on foot but was caught after a search that included use of a helicopter, she said.

He was booked in the Napa County Jail on suspicion of driving under the influence of drugs as well as similar evading charges, McDermott said.

Reeder had two previous drug-related arrests in Napa County earlier this year, she said.

You can reach Staff Writer Paul Payne at 568-5312 or On Twitter @ppayne.