1. To broaden or expand the scope of a formal investigation or questioning process to include additional areas, subjects, or persons
The committee decided to extend inquiry into the financial irregularities beyond the initial department.
O comitê decidiu ampliar a investigação sobre as irregularidades financeiras além do departamento inicial.
2. To prolong or continue an inquiry for a longer period than originally planned
The police extended their inquiry after discovering new evidence.
A polícia estendeu sua investigação após descobrir novas evidências.