Conversation so far:
What was someone on trial for in connection to Eden Natan-Zada?
The Israel Police opened a criminal investigation into Eden Natan-Zada's lynching.
What did the investigation into Eden Natan-Zada's lynching find?
On 13 June 2006, five suspects in the lynching were arrested, one was brought in for questioning, and a seventh suspect turned himself in.
What happened when the suspects in the lynching of Eden Natan-Zada were arrested?
Two suspects were subsequently released.

Question: Why were they released?
Self-contained rewrite: Why were two suspects in the lynching of Eden Natan-Zada released?