An Army soldier in Alaska is accused of fatally shooting his newlywed wife, stashing her body in a storm drain — then posting desperate Facebook messages about her disappearance and helping her mom search for her.

Heinous hubby Zarrius Hildabrand, 21, has been charged with raps including first-degree murder and tampering with evidence in the slaying of his spouse, Alaska National Guard combat medic Saria Hildabrand, also 21, the Anchorage Police Department said.

Hildabrand – who is a cannon crewmember assigned to the 2nd Infantry Brigade Combat Team – reported Saria missing Monday evening, Aug. 7, KTUU reported.

She was then found dead from a gunshot wound to the left temple Thursday in a 4-by-5-foot storm drain near the couple’s Anchorage apartment, the Anchorage Daily News said, citing the police incident report.

“Updated information on my missing wife PLEASE SHARE AND REPOST!!!!!!” Hildabrand had written on Facebook on Wednesday night above a picture of his wife’s “missing” poster — the day before her body was discovered and fewer than 48 hours before his arrest.

Saria’s distraught mother, Meredith Barney, told the Anchorage Daily News on Friday, “He walked around for hours with me searching for my daughter knowing that she was dead.

“He lied to me multiple times and tried to play it off like he was a concerned husband.”

When Hildabrand reported his wife missing Monday, he told police he and Saria returned home around 2 a.m. Sunday, Aug. 6, after celebrating his birthday downtown with friends, an incident report obtained by Law & Crime explained.

A neighbor later reported hearing a gunshot around 2:45 a.m. Sunday, KTUU said.

Hildabrand claimed that Saria, who worked with the Alaska National Guard, left between 9 a.m. and 10 a.m. Aug. 6 for her second job at a local restaurant.

The suspect said his wife walked to work because both of them were hungover and did not feel well enough to drive, the report stated.

He also claimed that she left her phone in the apartment but took her purse and wallet.

But in a separate interview, one of the couple’s friends told police that Saria mentioned she did not plan to work Aug. 6, the Anchorage Daily News said.

Hildabrand told police he “vegetated” at home while he believed his wife was at work, though he later backtracked and said he ran a few errands.

Hildabrand claimed he did not realize his wife was missing until he went to pick her up from work at 7 p.m. and learned she never arrived.

“Zarrius said that he had been searching for Saria ever since,” the complaint said. “Zarrius said that he had been to every friend’s house, called Saria’s parents, contacted all the hospitals, and jail.”

He finally contacted police 36 hours after Saria was last seen and told cops he was hoping he would track down his wife and “find [her disappearance] was a misunderstanding,” the document added.

After Saria was reported missing, her co-workers told officers that they received a text from her number at 10:45 a.m. Sunday, Aug. 6, saying she was calling off work.

Hildabrand reportedly denied sending the message.

When police interviewed Hildabrand on Tuesday at the couple’s apartment, they noticed two pistols on the kitchen table, KTUU said.

One of the guns was fully loaded — while the other was missing a single bullet.

A detective also noted that the apartment’s only bed did not have a sheet on it but was covered by a mattress pad with a package of new sheets nearby, the criminal complaint stated.

Hildabrand refused to let police lift the bed and examine it, finally saying that there were “embarrassing” items and “stuff used for sex” underneath, the write-up explained.

A few days into the investigation, police learned that Hildabrand purchased a jar of marinara sauce, a set of sheets matching the brand found at the apartment, a mattress cover, hydrogen peroxide and an empty spray bottle Aug. 6. It’s not clear what the pasta sauce might have been used for.

The suspect also bought a 96-gallon garbage can from a nearby Lowes, and police located a mop and mop bucket in the apartment that matched the kind sold on the same aisle as the can.

When detectives executed a search warrant for the apartment, they found the mattress was “saturated by human blood,” the complaint detailed.

“There was so much blood on the mattress that the blood soaked through onto the carpet and into the wood frame,” it said.

Investigators also found evidence of blood all over the bathtub and some of the floors, “most likely after ‘cleanup’ attempts were made,” the document said. 

Police eventually located the bloody garbage can on a trail near the couple’s apartment.

A drone search subsequently found Saria’s remains stashed in the storm drain.

The seemingly-happy couple had met at basic training last summer and were married in December 2022, her mom said. Saria moved from Utah to Alaska about six months ago to be with her new husband.

A neighbor, Maria Edwards, said she was shocked by the turn of events.

“It was Sunday, our fire alarms kept going off this week, and we had talked about the fire alarm system,” she told KTUU of her and Hildabrand. “But he didn’t show me any kind of inclination that maybe something was off. So that was a surprise.”

Hildabrand appeared in court Friday in an orange jumpsuit, the Anchorage Daily News said.

He was appointed a public defender and is being held on $500,000 bond.

Barney spoke at the arraignment, calling her son-in-law’s actions “terrifying.”

The young woman’s family wrote in a Facebook statement Saturday, “Saria Barney was an amazing young woman.

“No one could [have] imagined that this would happen to her.”

The GoFundMe that was initially started to raise money for the search effort is now being diverted to covering funeral costs and returning Saria’s remains to Utah, the family added.

As of Sunday morning, the fundraiser had raked in almost $18,000 of its $20,000 goal.

The Anchorage Police Department did not return The Post’s request for a comment Sunday on Hildabrand’s arrest.