Police in India are questioning ten people following a series of explosions that killed at least 50 people in New Delhi.
The three near-simultaneous blasts in separate locations of the city came a week before two major Hindu and Muslim festivals.
The first explosion is reported to have taken place outside a cinema near the New Delhi railway station, popular with budget domestic travellers and foreign backpackers.
A second blast was reported at Sarojini Nagar market, a congested shopping area in south Delhi.
A third explosion occurred at Govindpuri, a largely industrial area in the south of the city.
Indian officials said the powerful explosive RDX was used in the attacks, which occurred as Indian and Pakistani officials met in Islamabad to discuss how to open their border in Kashmir to help the victims of the south Asia earthquake.
The attacks triggered a nationwide alert and security was stepped up in Mumbai as well as other cities.
Other markets in Delhi, a city of about 12 million people, shut down after news of the blasts.
There was no immediate claim of responsibility but Prime Minister Manmohan Singh blamed 'terrorist elements' as suspicion fell on militant groups opposed to the peace process between India and Pakistan.
As it has with previous incidents, Pakistan immediately condemned the 'terrorist blasts'.
The Minister for Foreign Affairs, Dermot Ahern, has expressed his shock and outrage at the attacks, emphasising the 'excellent and long-standing relationship' Ireland has with India.
