People who live in a Wilkinsburg apartment building had to endure a loud fire alarm that blared for nearly 16 hours throughout the night Sunday into Monday morning.

Channel 11 News has learned that the alarm was set off by burning popcorn around 6:30 p.m. Sunday.

People who live in the Wood Street building said they tried to contact the building's manager but were unable to get the alarm shut off.

"I've been up all night," said Tina Elder.

Channel 11's Shelby Zarotney reported that firefighters were unable to shut the alarm off because of liability issues.

Residents said they called the company that owns the building, Glenshaw Gardens, but it still took more than half of a day for someone to come and turn the alarm off.

"A lot of people are angry," said one resident. "One man went to a hotel room."

Around 10 a.m. a maintenance worker and a locksmith were able to shut the alarm off. The maintenance worker said he has a key to turn off the alarm but does not have a key to get into the room where the alarm panel is located.

A code enforcement supervisor is working to find out why it took so long for the alarm to be silenced.