ATHENS, Greece (AP) — Greek police have destroyed a suspicious parcel sent to the Athens Stock Exchange that was stopped at the mailroom and did not disrupt trading.

Police said the parcel sent to the stock exchange contained gunpowder and batteries, but it was unclear whether it was fully rigged to explode. A police statement says the anti-terrorism squad is investigating Thursday’s incident.

The stock exchange building has been targeted in recent years by an extremist anarchist group, which exploded a large bomb outside it, while other anarchist groups have engaged in parcel bomb campaigns.

Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.