Dear si,

We are seriously looking about the status of the project on going. could you update us the status of investiagation?

Your prompt response is highly appreciated.
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Dear Si,

We are seriously looking into the status of the ongoing project. Could you update us on the status of the investigation?
Your prompt response is highly appreciated.
.
Dear Sir,

We are follow up closely with the status of the ongoing project. Could you update us on the status of the investigation

Can i use "follow up closely"?
Students: Are you brave enough to let our tutors analyse your pronunciation?
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No, and it would be good if you were more careful in preserving my corrections.

We are following up closely on the status of the ongoing project. Could you update us on the status of the investigation?
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