Caroll Spinney, the actor and puppeteer who portrayed Big Bird and Oscar the Grouch on Sesame Street over five decades, died Sunday at age 85.

The Sesame Workshop said Spinney had died at home in Connecticut, and that he had long lived with dystonia, a disorder that causes involuntary muscle contractions.

The FBI is investigating the shooting at Naval Air Station Pensacola on Friday as an act of terror.

Rachel Rojas, the special agent in charge of the FBI's Jacksonville Field Office, said in a news briefing Sunday that investigators are working with "the presumption that this was an act of terrorism."

Doing so, she said, "allows us to take advantage of investigative techniques that can help us more quickly identify and then eliminate any additional threats to the rest of our community."

There is currently no evidence of such a threat, she added.

Updated at 12:05 p.m. ET

The fast-rising rapper Juice WRLD has died at age 21 after a medical emergency at Chicago's Midway Airport. TMZ first reported the death, saying that witnesses saw him having a seizure after disembarking from a private plane.

The Cook County medical examiner's office confirmed his death to NPR, saying that the autopsy for Juice WRLD — whose real name was Jarad Anthony Higgins — will most likely take place on Monday.

A fire broke out at a factory in India's capital New Delhi early on Sunday morning. At least 43 people have been reported dead.

Many of the victims were asleep in beds in the factory, resting between shifts, when the fire began.

Investigators say the blaze was sparked by an electrical short circuit. Most of the deaths were caused by people inhaling poisonous gases in the cramped factory, The Associated Press reports.

Guides hand out knee-high rubber boots before leading visitors on hikes around Gorgona National Park, an island 21 miles off Colombia's Pacific coast. The boots provide traction in the mud — and protection from poisonous snakes.