Police investigating the disappearance of Georgia woman Imani Roberson have arrested her husband, Donell Anderson, and charged him with murder. 

The Rockdale County Sheriff's Office held a press conference Saturday morning to provide an update on the case after Roberson's body was found. Roberson, a 29-year-old mother of four, had been missing for nearly three weeks. 

"It was clear that foul play was evident in the disappearance," said Sheriff Eric Levett. 

Levett said that Roberson was last seen by her mother on July 16, after having dinner at her home with her four children. After leaving her mother's house, Roberson returned home with two of her children, a three-year-old and a one-month-old baby, while two older children spent the night with their grandmother. Roberson left in her white Mazda SUV on Plantation Boulevard. 

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The next day, her mother went to Roberson's home after making several unsuccessful attempts to contact her daughter and becoming concerned. The grandmother found no one at the home and called police to report her daughter missing. 

Levett said the Rockdale County Sheriff's Office immediately opened an investigation, contacted family and friends and identified locations that Roberson was known to frequent. 

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On July 27, police found Roberson's car in a wooded area off Camp Creek Parkway near Union Road in Atlanta. The car was reportedly burned from the inside out. Ring camera video from a home across the street from Roberson's office obatained by FOX 5 Atlanta showed the vehicle speedily pulling out of the driveway on the day she went missing. 

The investigation led police to a home that was shared by Roberson and her husband, Donell Anderson. 

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"This investigation led us to conduct several search warrants on homes to include the home of our victim, a car and cell phones," Levett said. "In addition, we spoke to several individuals, collected a number of evidence to include blood in our victims home and in other places that I won't be specific on." 

The sheriff said investigators found Roberson's body Friday morning with the assistance of a cadaver K-9. The body matched a description of Roberson, including tattoos that matched photos provided by her family. 

A SWAT team dispatched by the sheriff's office arrested Anderson Friday at an apartment located in Atlanta. He is charged with felony murder, malice murder, aggravated assault and possession of a firearm in the commission of a crime. 

Levett told reporters the investigation remains open and more individuals could face charges.

Officials are urging visitors to remain cautious following two drownings at the Lake Mead National Recreation Area. 

The National Park Service said Friday that the fatalities occurred over the past weekend. 

The fatalities bring the total number of deaths this year in the area – Lake Mead sits at the Nevada-Arizona border – to 19.

"Two more people drowned at Lake Mead NRA – that’s 19 fatalities this year, a sad trend we want to change," Acting Superintendent Mike Gauthier said in a release. "We are still seeing multiple incidents and accidents, both on the land and on the water."

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There were also several close calls with boaters being caught off-guard as monsoon winds swept through the area unexpectedly, creating hazardous conditions on the water. 

There were also noted ongoing instances were swimmers with pool toys and paddleboards were blown from designated swimming areas out into the lake by the strong winds.

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Authorities point out that lifejackets save lives and that pool toys are "prohibited and dangerous" when the wind carries swimmers away or when they pop or deflate. 

The release pointed out officials see unsafe boating practices there every day, including drinking and driving and heat-related illness. 

It’s also monsoon season, which means unpredictable rainy and windy weather conditions with little-to-no warning. 

"We want all of our visitors to have a rewarding, positive experience at Lake Mead [National Recreation Area]," said Gauthier, "and we really want everyone to make it home safely."

Lake Mead has seen its water level drop over the past year as the Colorado River reservoir behind Hoover Dam recedes because of drought and climate change.

The Associated Press contributed to this report.