India's ambassador to Beirut, Nengcha Lhouvum, told the BBC that 630 Indians were expected to return by a warship, INS Mumbai, on Thursday.
Three Indians have been wounded and one is missing after an attack in the Shatura area of Beirut, she added.
There are an estimated 12,000 Indians in Lebanon.
Most of them are unskilled or semi-skilled labourers working in factories and industrial units. Many of them have been living in Lebanon for more than two decades.
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