FILE PHOTO: People holding mobile phones are silhouetted against a backdrop projected with the Twitter logo in this illustration picture taken September 27, 2013. REUTERS/Kacper Pempel/Illustration
(Reuters) - Twitter Inc on Tuesday said it would shut down live-streaming app Periscope, which it bought in 2015, due to declining usage over the past couple of years and high supporting costs.
The mobile app has been in "an unsustainable maintenance-mode state" for a while, Twitter said in a blog post.
