STILLWATER, Okla. -- Jacksonville Jaguars first-round draft pick receiver Justin Blackmon was arrested on an aggravated DUI charge Sunday after authorities in Oklahoma said he had three times the legal limit of alcohol in his system.

The former Oklahoma State star smelled of alcohol when an officer pulled him over shortly after 3 a.m., Stillwater police spokesman Capt. Randy Dickerson said.

Blackmon agreed to take a breathalyzer test and blew a .24 -- three times the legal limit of .08, Dickerson said.

Under Oklahoma law, a driver can be charged with aggravated driving under the influence when a test shows .15 or greater.

The Jaguars drafted Blackmon with the fifth pick in this year's NFL draft in the hopes that he could upgrade the league's worst offense.

"We are aware of the report and are gathering information," Jaguars spokesman Dan Edwards said. "We don't have any comment at this time."

Blackmon was released from jail Sunday afternoon on $1,000 bond. He's due in court on Monday.

Payne County Sheriff Sgt. Brandon Ingham says jail records didn't list an attorney. His agent, Todd France, didn't immediately respond to an email or phone message seeking comment.

A Stillwater police officer tried to pull Blackmon over for speeding -- 60 mph in a 35 mph zone -- and driving left of center early Sunday morning, Dickerson said.

Blackmon drove about four blocks before stopping in a gas station parking lot, Dickerson said.

"He was unsteady on his feet, his speech was slurred, and his eyes were glassy and blood shot," Dickerson said in a statement. "He admitted to consuming alcohol prior to driving."