WASHINGTON (AP) — The number of VA facilities under investigation after complaints about falsified records and treatment delays has more than doubled in recent days, the Office of Inspector General at the Veterans Affairs Department said late Tuesday.

A spokeswoman for the IG’s office said 26 facilities were being investigated nationwide. Acting Inspector General Richard Griffin told a Senate committee last week that at least 10 new allegations about manipulated waiting times and other problems had surfaced since reports of problems at the Phoenix VA hospital came to light last month.