(WPXI)-First responders were on the Monongahela River on Saturday. In a social media post, the Rostraver Township Fire Department said it was assisting the Donora Fire Company with a search on the river. Rostraver reportedly provided water rescue resources to search the area and used a thermal imaging drone. Officials say they were “unable to locate a person in distress.” No further information was available. Police continue to investigate, the post says.