An 18-year-old was arrested Tuesday on charges of killing his father and stepmother at a mobile home near Melbourne, according to police.

The Brevard County Sheriff's Office charged Matthew Wayne Almand, 18, with two counts of first-degree murder a few hours after stopping his vehicle near the intersection of Sarno Road and Apollo Boulevard in Melbourne, Local 6 News partner Florida Today reported.

Almand was arrested in connection with the shooting deaths of his father, Rodney Wayne Almand, 38, and stepmother, Jacqueline, 38.

Brevard County Sheriff's investigators did not give a reason for the slayings at the mobile home in Twin Lakes, just north of the Melbourne city limits and near western Aurora Road, according to the report.

Officials said the two died of gunshots. However, the weapon had not been recovered Tuesday.

At one point, police called the suspect on his cell phone, saying they wanted to talk to him, said Bruce Barnett, a Brevard Sheriff's homicide investigator. The suspect said he did not know anything about the slayings, Barnett said.

Matthew Almand's black Lincoln Navigator was stopped after it hit a Melbourne Police vehicle, officials said.

Almand graduated from Eau Gallie High School in May of this year, Florida Today reported. He had been working in Jupiter, Fla., for a company that cleans up hurricane debris and he just recently returned home, officials and neighbors said.

Almand was questioned at a sheriff's station on Sarno Road.

When he was led from the station to a waiting vehicle around 2:25 p.m., Almand joked with the media and made a hitting motion with his hands when a reporter called out, "Why did you do it?"

Meanwhile, investigators obtained a search warrant and planned to check the mobile home for evidence.

Watch Local 6 News for more on this story.