CCTV plays an important role in revealing the incidents that occurred on that day. CCTV footage identified important moments at 15:20. During this time period, Mirna Salihin's father believed that Jessica was the only one who had control over the cup of coffee containing cyanide. "Digital forensics, Mr. Nuh showed the pixels. Well, at that 15:20 moment, only Jessica had control over the coffee, how could there be someone else?" said Mirna's father, Edi Darmawan Salihin, in a YouTube video by Karni Ilyas Club.

Karni Ilyas, a seasoned journalist, was interviewing Ayah Mirna and took note of whether there was any direct evidence showing that Jessica had mixed something into the coffee. However, Ayah Mirna provided his own version of the explanation. He presented a sequence of events that were visible in the CCTV recording. According to him, the recording depicted Jessica tasting the coffee before secretly putting something into it.

According to Edi, the color of the coffee changed from brown to yellow, similar to turmeric. This color change corresponds to the time of the suspected incident, which is an indication of the presence of cyanide in the drink. "Well, Agus (the waiter) was shocked to see that the coffee, why did the color become like turmeric? We served it as brown, why did it become yellow? It was Krishna Mukti who conducted the experiment, and it happened exactly at that time, so it already had cyanide in it. He is clever," explained Edi.