One person has been killed and at least 49 injured in bomb blasts at cinemas showing a controversial film in the Indian capital Delhi, officials say.
The blasts occurred within minutes of each other
The first device went off at about 2030 (1500 GMT) in the crowded Karol Bagh shopping district. The second blast hit about 15 minutes later in the west.
Both cinemas were showing a film that has been criticised by Sikh religious leaders for denigrating their faith.
Officials say they do not know who was behind the apparently linked blasts.
Authorities began to shut all cinema halls across the city following the blasts and security forces in the capital were put on high alert, reports say.
Sunday's first explosion shook the Liberty Cinema, with the detonation of a device planted under a seat in the front rows, officials said.
Shortly after, a second blast rocked the Satyam Cinema as an explosive went off in a toilet, they added.
Many among the audience described the cinemas filling up with smoke and people panicking as they rushed to escape.
Some of the injured were reported to be in a serious condition.
The film, Jo Bole So Nihaal, was withdrawn from theatres across the largely Sikh state of Punjab last week, following protests.
A leading Sikh body, the Shiromani Gurudwara Prabandhak Committee (SGPC), said the title misused a battle-cry.
The film was showing for the first time in Delhi this weekend.