A juvenile North Atlantic right whale that washed up on Martha’s Vineyard in January with fishing gear caught in its tail died from “chronic entanglement” with such equipment in ocean waters, according to federal officials.

Federal scientists say an endangered North Atlantic right whale found dead on a Massachusetts shoreline last winter suffered fatal injuries from being chronically entangled in lobster fishing gear.

A federally-led necropsy into the death of a North Atlantic right whale that washed ashore on the Vineyard earlier this year has been completed and officials are concluding that the whale died from chronic entanglement in fishing gear.