Amazon may have an uphill climb as it tries to prevent law enforcement from prying into data captured by its popular “Echo” device as part of an ongoing criminal investigation.

Lawyers for the Seattle-based retail giant earlier this month moved to quash a warrant to turn over recordings and other data stored in the cloud from an Echo owned by James Bates, who is suspected in the murder of a friend found dead in Bates’ hot tub in 2015.