alarmed

"People living nearby may have heard a loud bang but we would like to reassure them that there is no reason to be alarmed," a police spokesperson said.

Travelers have also been alarmed by Canadian advisories warning citizens that they should “expect scrutiny” at the U.S. border.

The UN's humanitarian co-ordinator in Sudan, Clementine Nkweta-Salami, said she was "appalled and gravely alarmed" by reports of what had happened.

In the 1980s, he was alarmed at the rise of Japan as an economic superpower, arguing that America’s trade deficit with Japan was problematic and that the U.S. should respond with crippling tariffs.

The transit agency said the public was not in danger, but residents who learned of the threat last month were alarmed by the lack of information provided.