New details continue to emerge regarding Madeleine McCann's 2007 disappearance. After her parents, Kate and Gerry McCann, realized that the 3-year-old was missing from their hotel room in Praia da Luz, Portugal, an investigation was launched in an attempt to discover new information about her whereabouts. Following Christian Brückner's identification as the prime suspect in the McCann case, a report has now stated that a "key piece of evidence" may potentially link him to the alleged crime.

According to NZ Herald, a 30-minute phone call that "Christian B" made an hour before Maddie's disappearance has been "a central part of the renewed police probe." As stated by the publication, the call was made to a phone that was registered by a man named Diogo Silva and has since been traced.

READ: Madeleine McCann Update: Previous Theory About Suspect Resurfaces Following Christian Brückner's Identification

After reportedly beginning the call at 7:32 p.m., Brückner is said to have concluded the conversation at 8:02 p.m. on May 3. That same night, Madeleine disappeared from the hotel between 9:10 p.m. and 10 p.m. The reason behind the phone call is still unclear, but police are reportedly attempting to obtain new details surrounding the content of the conversation. 

During an appearance on the Australian edition of "60 Minutes," Prosecutor Hans Wolters also told TV host Liz Hayes that investigators now believe that they can place "Christian B" at the scene of Madeleine's disappearance.

This is not the only discussion surrounding potential evidence that has emerged in recent weeks regarding McCann's case. Previously, various reports indicated that police believed that "significant" evidence could potentially be revealed by unexpected people. However, the ongoing "disjointed investigation" is said to have also created unexpected hurdles after investigators reportedly fought over a DNA sample that was taken from the McCanns' hotel room in Praia da Luz.

As for Brückner himself, those who have spent time with the prime suspect over the years have revealed that not only did he allegedly freak out when the 3-year-old's name was mentioned, but a former roommate stated that he had once been "obsessed with the dark web."

READ: Madeleine McCann Update: Prime Suspect's Past May Link Him To Another Missing Girl

Theories about his potential involvement have also floated around over the past decade, including one that he could have been assisted by a "crooked hotel worker." However, he has reportedly continued to be uncooperative throughout the ongoing investigation and has issued a recent statement through his lawyer about his innocence instead of offering any new details. 

Madeleine McCann Madeleine McCann disappeared on holiday in Praia da Luz, Portugal, on May 3, 2007. Photo: METROPOLITAN POLICE/Handout