The whole body of the Sanhedrin arose and took Him to Pilate. Then they told lies about Him saying that He forbade the people to pay taxes to Caesar. This whole scenario was a set up beforehand (Luke 20:20-25). We are told that they marveled at His answer and kept silent (Luke 20:26). Since they could not catch Him with His Words, they made up words and bore false witness against Him. This too was prophesied (Psalm 64:3-6).
This murderous act of Pilate is only recorded in Luke. The Galilaeans are frequently mentioned by Josephus as the most turbulent and seditious people, being upon all occasions ready to disturb the Roman authority. Pilate was a cruel ogre of a man. He intentionally tortured and killed many. His actions toward Yeshua and his cruel treatment of Him are a testimony forever to the evil in his heart.
The chief priests and elders took counsel against Yeshua. Apparently they found Him guilty, even though He was innocent of any evil. But this was necessary in order for prophecy to be fulfilled.