Mr. D'souza is brutally murdered in his own house. Detective Mehul arrives to look into the matter. At the time, there were four people in the house. Mehul interrogates all of them.

Maid - “I was doing the dishes. I'm completely clueless”.

Cook - “I had been preparing lunch since the morning. I don't know anything too.”

Gardener - “I've been in the garden since the morning. I didn't even meet Mr. D'souza today. I don’t know anything.”

Mechanic - “Mr. D'souza 's car needed some fixing, so I came to repair it.I don't know anything either.”

Observe the statements carefully and help Detective Mehul to find who is the murderer?