Who did it? Three Riddles and Answers

Can you solve these 3 Riddles popular on - Who did it?, Yes! this time here I present 3 tricky puzzles, you have to guess who the murderer/suspect/liar is?

It is really a fun to solve them all, also I'm curious to know how many riddles you answered correct, please leave your thoughts in comments.

For me making this type of video is little challenging for me

Riddles I asked-
1) Murder in School
2) Three Suspects
3) Detective Peter

Hope you enjoyed it too!
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"Killers" Kevin MacLeod (incompetech.com)
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That’s all Folks!