PASCO COUNTY, Fla. — Two Pasco County Sheriff's Office K9 units are assisting North Port Police in the search for Brian Laundrie at the Carlton Reserve. 

This is not the first time a human remains detection K9 has been requested from the sheriff's office. A K9 trainer is also on-site to assist in handling the K9. 

What You Need To Know

Law enforcement continues to search for Laundrie at the reserve, days after a Wyoming coroner revealed that Gabby Petito died by strangulation. 

Teton County Coroner Dr. Brent Blue didn't say if it was manual strangulation or with an item of some sort and released very few details, but he did say Gabby's body was outside for 3 to 4 weeks before it was found last month. 

He also would not comment when asked if he believed Petito was killed at the same location she was found, or if she was taken there. 

Petito was last seen on Aug. 30 in Grand Teton National Park during a cross-country trip with her boyfriend Brian Laundrie, who returned to Florida alone on Sept. 1.

Laundrie is considered a person of interest in the case but has not been seen for almost a month.