Senate resolves to prosecute secretary to the federation lawal over breach in contract award

I think there may be a slight mistake in your statement. The Senate cannot "resolve to prosecute" anyone, as that is the role of the judiciary. The Senate is a legislative body that makes laws, not a court of law that tries cases.

However, I assume you meant to say that the Senate has resolved to investigate or take action against the Secretary to the Federation, Lawal, over allegations of breach of contract award.

If that's the case, here's a possible rewording:

"The Senate has resolved to investigate and take action against the Secretary to the Federation, Lawal, over allegations of breach of contract award. The Senate has expressed concerns over the alleged irregularities in the contract award process and has called for a thorough probe into the matter."