Mumbai | Mumbai police on Sunday said a 30-year-old Bangladeshi national has been arrested for allegedly stabbing actor Saif Ali Khan at the latter's residence here.

Preliminary investigation suggests that the man was unaware that he had entered a Bollywood star's house and his intention was theft, a senior police official told reporters.

He said the attacker was nabbed at Hiranandani Estate on Ghodbandar Road in neighbouring Thane district.

The official said the man had changed his name, Shariful Islam Shehzad Mohammad Rohilla Amin Fakir, to Vijay Das after he entered India.

He said the accused, who hails from Jhalokati in Bangladesh, had been living in Mumbai for more than five months, doing petty jobs and was attached to a housekeeping agency.

The police have registered a case against the accused under sections 311 (robbery or dacoity with the intent to cause grievous hurt or death, 331(4) (house-breaking) and other relevant provisions of the Bharatiya Nyay Sanhita and Passport Act, 1967, the official said.

Police are trying to collect the documents the accused used to enter India illegally.

The official said the accused was brought to Khar police station, where interrogation is underway to find out how he reached the actor's flat and other details.

He would be produced before a court where police would seek custody, he said.

The Bollywood star was repeatedly stabbed with a knife by the intruder inside his 12th-floor apartment in upscale Bandra early Thursday in a shocking attack that raised intriguing questions about security, motive, and celebrity life.

Khan, 54, underwent emergency surgery at the Lilavati Hospital, where he was rushed following the incident that took place around 2.30 am at his apartment in the 'Satguru Sharan' building. He is recovering and may be discharged soon, doctors said.