Is there any evidence that paul presecuted christians?

In The Bible, it talks about how Paul's original name was Saul. He was an educated Jew who hated Christians. He was a part of persecutions of Christians, and the Bible has a specific passage in Acts that talks about Saul holding the coats of the men who stoned Stephen, and Christian. Saul eventually became a Christian after having an encounter with God while traveling from city to city. So yes, there is biblical evidence of Paul (back then Saul) persecuting Christians.