In Eicha (and in Kinnot), there's mention of a "Cohen and Navi" that was killed. Traditionally, this is ascribed to a Navi Zecharia who lived in the time of Yoash who was killed in the Beit Hamikdash.
I am only aware of two original references to the story -- a minor mention in Divrei Hayamim (II 24:20-22), and a story in the Bavli (Sanhedrin 96b) about Nevuzeradan. I was wondering if there were any other sources or takes on this, as this seems quite incomplete (e.g. who exactly Zecharia was, what the reason for his killing was, and why it was deemed so evil that his blood remained boiling for 200 years).
1) There have been many Neviim who were murdered, and yet this is the only one (that we know of) that was given significance by the fact that the blood remained boiling for 200 years. It seems to me there must have been a reason beyond a "kohen and navi" for this to happen.
2) This event was accorded significance by the Rabbis (the fact that the story of Nevuzeradan is brought down in Talmud), and yet we know more about Nevuzeradan than Zecharia . I am looking for any other midrashic sources that can reference either half of the story, or any rabbinical source that examines their importance.