MOUNT CLEMENS, Mich. -- A trial is expected to be delayed for a man accused of killing a 14-year-old girl along a popular suburban Detroit nature trail.

The Macomb Daily of Mount Clemens reports the delay is because assistant Macomb County prosecutor William Cataldo is taking over the case after Therese Tobin, the office's chief trial attorney, accepted a position as a federal administrative law judge.

James VanCallis' trial, originally planned next week, likely will begin the second week of October.

VanCallis is charged with first-degree murder, kidnapping and assault with intent to rape in the death of April Millsap. Authorities say the St. Clair County man hit her with a motorcycle helmet and stomped on her in July 2014 while she was walking her dog, Penny, along Macomb Orchard Trail in Armada.

According to CBS Detroit, Millsap was reported missing July 24, 2014 when she failed to return from walking Penny. Her body was found hours later in a ditch when Penny alerted passing joggers to the girl's body.

Less than a month after her body was found, police arrested VanCallis -- along with his father -- on drug charges after investigators found an alleged illegal marijuana farm at their home. Police later named VanCallis a person of interest and prosecutors charged with him murdering Millsap in October.

The 33-year-old has maintained his innocence and his lawyer has said that there is no DNA evidence linking VanCallis with Millsap's death. However, three witnesses claim they saw him talking with the teen before her body was discovered.

Prosecutors have also said that a shoe print matched the "unique" brand of shoes work by VanCallis, according to CBS Detroit.

VanCallis currently remains in jail without bond, but could face life in prison if convicted.