SAN JUAN, Puerto Rico (AP) — Puerto Rico's justice secretary is investigating pay raises given to 19 mayors in the U.S. territory amid an economic crisis.

Luis Sanchez Betances said Tuesday that the municipalities being targeted have 10 days to hand over all documents related to the salary increases.

He says he began the investigation following public complaints and concerns about the effect the raises could have on the island's crumbling public pension system.

Sanchez says mayors will have to repay the money they earned if justice officials find their increases to be without merit.