05/07/2013 04:18 pm ET Updated Jul 07, 2013

Suspicious White Powder Found At Brooklyn Courthouse, NYPD Says

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The NYPD has confirmed that police are investigating a suspicious white powder found Tuesday at the U.S. District Court House for the Eastern District of New York in Brooklyn.

Talking Points Memo reports the powder was found in a letter labeled 'anthrax.'

The building, located at 225 Cadman Plaza, in on lockdown, but TPM reports the quarantine is restricted to the first floor.

A federal judge heard arguments at the courthouse Tuesday morning in a high-profile case regarding access to the morning-after pill.

There have a been a rash of suspicious packages in New York City recently. On Monday, a suspicious package at Grand Central Terminal turned out to be a bag full of trash.

This is a developing story...