STILLWATER, Okla. (AP) — 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.”

There wasn’t anyone else inside the Chevrolet Tahoe, Dickerson said.

Blackmon was previously arrested on a misdemeanor DUI charge in Texas in 2010 after officers caught him speeding on a suburban Dallas highway.

He told reporters after the arrest that he made a mistake and took full responsibility for it.

“I’m embarrassed to be in this position,” Blackmon said. “I’m truly sorry to my family, to my friends and to Oklahoma State all together. I look forward to redeeming myself and proving to everybody that this isn’t who I am. I’m not this guy. I’m humbled by this experience and I will grow from it.”

Blackman didn’t face any jail time from that charge, which a prosecutor had described as a fine-only offense.

The Jaguars traded up to select Blackmon in April.

The 6-foot-1, 207-pounder caught 122 passes for 1,522 yards and 18 touchdowns last season. He had 111 receptions for 1,782 yards and 20 touchdowns the year before.

“He’s got an edge to him,” new coach Mike Mularkey said earlier this year. “He’s one of these guys who doesn’t think he can be covered. That’s pretty important at that position with that kind of confidence, that you can line up and dare somebody to try to stop you and believe that you can’t be. I like that edge.”