BERLIN (AP) - Police in Germany are investigating whether a box of sandwiches contained a poisonous substance, and 20 people who ate them have been hospitalised as a precaution.
The suspicious sandwiches were left on the doorstep of a company in the north-western town of Vechta on Tuesday with a note saying they were a gift.
Police say 25 employees ate the sandwiches before someone noticed a strange substance on them.
Police spokesman Klaus Koesterke said on Wednesday that so far none of those hospitalised has shown symptoms of poisoning.
But authorities are not excluding the possibility of a slow-acting poison and have rushed samples of the sandwiches to a Berlin laboratory for tests.