Pennsylvania State Police said that they found a journal containing "chilling writings" that was left by ambush suspect Eric Frein. ABC News reported that it described how he opened fire on two state troopers outside a rural police camps while watching one of his victims fall and then made his escape.

According to Pennsylvania State Police Lt. Col. George Bivens, who read from the multipage journal with the suspect's "chilling writings," said that authorities found it last week at a campsite used by Frein. It also described how he escaped in a Jeep, ran it into a swamp and took off on foot.

PennLive.com reported that the authorities gave an update on the manhunt Wednesday, 26 days after the late-night ambush that killed Cpl. Bryon Dickson and seriously injured Trooper Alex Douglas. The ambush suspect, Frein is charged in the surprise attack three weeks ago that left on state police trooper dead and one wounded.

During the massive manhunt in the Poconos on Sept. 29, two fully functional pipe bombs have been found. The explosives were not deployed but can cause significant damage. Other things that were discovered at the campsite were ammunition, food, water, clothing and the waterlogged document containing the ambush suspect's "chilling writing."

The police are analyzing it, but Bivens said that he is convinced it was written by the ambush suspect. He also added that after reading the "cold-blooded and absolutely chilling account," he can only describe Eric Frein's actions as "pure evil."

Frein, the ambush suspect, was described by the authorities as a 31-year old survivalist and expert gunman with resentment against law enforcement.

Hundreds of law enforcement officials have been looking for the ambush suspect. And the authorities believe that they have seen Frein in the forest, but the distance and rocky landscape allowed him to escape.

Bivens also said that the ambush suspect's journal containing his "chilling writings" also detailed information that the shooter would know. Markedly, Frein did not identify the troopers by name, signifying that they were attacked at random.

In addition to confirming the journal's existence, which contained "chilling writings" from the ambush suspect, authorities also explained Wednesday that explosives were found at the campsite along with other bomb-making materials.

Special Agent Sam Rabadi, who is in charge of the Pennsylvania field office of the US Bureau of Alcohol, Tobacco, Firearms and Explosives, said that he believed that Frein might have created additional and more lethal explosive bombs capable of causing severe injury.

Aside from the discovery of the ambush suspect's "chilling writings," the bombs found also caused the filling of additional charges which were two counts of possession of weapons of mass destruction.