MONTPELIER, Vt. (AP) _ Officials say a problem with Vermont’s Emergency 911 network prevented some calls from getting through this week.

Vermont Public Radio reports ( that on Thursday morning for nearly an hour, some calls to Vermont’s E-911 system prompted a spate of “phantom” calls that appeared to come from the same address and phone number as the first call did.

Tyler Morse, IT manager for Vermont’s Enhanced 911 Board, says it appeared that 15 legitimate calls may not have gotten through because of the high volume.

He told VPR that those callers were contacted.

Morse says the problem came from E-911 services provider Intrado, of Colorado, and says it’s under investigation.