Three of four men accused of beating a critically injured man who arrived at an Anchorage hospital in a dog kennel remain at large, after a grand jury indicted the group on attempted-murder charges.

Anchorage District Attorney Clint Campion’s office said in a Wednesday statement that Faamanu “Junior” Vaifanua, 28, Macauther Christmas “Mac” Vaifanua, 29 and Jeffery Ahvan, 29 – all named by Anchorage police as suspects in the Aug. 13 beating of 34-year-old Abshir Mohamed – were indicted last week along with a fourth suspect, 24-year-old Rex Faumui.

Police said in a Wednesday statement that Mohamed remained in critical condition after the assault.

Ahvan was arrested by Anchorage police Friday, according to Campion's office, but the other three are not in custody. All four now stand charged with first-degree attempted murder, assault, hindering prosecution and robbery, as well as kidnapping, conspiracy to commit kidnapping and tampering with physical evidence. In addition, all of the suspects except Macauther Vaifanua were indicted on a weapons-misconduct charge.

Mohamed had been reported missing on Aug. 13 by his girlfriend, police said earlier this month. Charging documents in the case say he was taken to a home on the 6500 block of Cimarron Circle, where he was seen on surveillance video bound and being beaten with a metal broom handle and an aluminum baseball bat.

Mohamed had owed one of the men a few thousand dollars, a friend of the victim told police, allegedly for drugs.

Campion said Wednesday that Faumui is the man seen in a photo distributed by APD of an unidentified “person of interest” in the case.

Anchorage police are seeking this person of interest in an assault on Sunday, Aug, 13, 2017. (From APD)

A fifth suspect originally named by police, 21-year-old Tamole Lauina, was not indicted by the grand jury in the assault itself but still faces a kidnapping count according to court records. Police said she remained at large.

Tamole Lauina, 21, is charged with kidnapping in Abshir Mohamed's beating and remains at large. (From APD)

"I would describe her as a person of interest in the investigation," Campion said.

No charges were filed against the driver who dropped Mohamed off at a local hospital, Campion said. That person, who spoke with police afterward, is considered a witness in the case; according to APD, the driver wasn't involved in the assault.

Anyone with information on the whereabouts of the suspects still at large is asked to call Anchorage police at 907-786-8900. Tips can also be given to Anchorage Crime Stoppers, at 907-561-STOP or through its website.