Two men were arrested over the death of Cayleb Hough, a teenager from Melbourne whose body was discovered in a mineshaft.

A 36-year-old man was arrested on Wednesday at a house in Collingwood while another man, 28, was arrested at a property in Gellibrand, in the Otway Ranges, Victorian Police announced on Thursday. The 28-year-old was interviewed before he was released awaiting additional investigation.

Seventeen-year-old Hough went missing last year on Dec. 20 after witnesses saw him travelling with a man in a car. His body was then discovered on March 10 in a shallow mineshaft located in the Lerderderg State Park in Bacchus Marsh.

Police also retrieved a vehicle at the same scene and are currently probing it. However, it was not the same vehicle that witnesses saw Hough in as it was discovered in January at car park in Melbourne, which was a blue 2003 Ford Falcon XR6 sedan, according to

After Hough’s body was discovered and identified, his family has since stated that his death has “left a hole in their hearts.” The family expressed their shock and sadness over the death of the teenager in an emotional Facebook post.

“Words really can’t describe the on-going pain and suffering we have all had to endure through this horrific experience and it will continue,” the post read. “All of us close to Cayleb knew from the start that things didn’t add up and that something wasn’t right. Our campaign is not over and we will never give up until the evil monsters that not only hurt our boy, but took his life are brought to justice.”

The family revealed that even though Hough went missing for 16 weeks, they still held on to the hope that he would return to their home safe and sound. They went on to thank members of their community in helping the police in finding his body and vow to seek justice for his death, according to the Daily Mail.