From Longman Dictionary of Contemporary Englishunconfirmedun‧con‧firmed /ˌʌnkənˈfɜːmd◂ $ -ˈfɜːrmd◂/ adjective → unconfirmed report/story/rumour etc
Examples from the Corpus
unconfirmed• We have an unconfirmed report of shots fired in the area of Brandenburg Gate.• One unconfirmed report said Hamilton had intended to take the children hostage but that his plan went awry.• By early afternoon, there's an unconfirmed report that the river has crested at 17.5 feet.• Horrors include the bombing of civilians and unconfirmed reports that napalm has been used.• According to unconfirmed reports the government had offered talks with Bhutto in return for an agreement to end the agitation.• It was hard to keep track of the unconfirmed star sightings.• There is an unconfirmed suggestion that Diaper was ordained priest in 1715. 