Mumbai: The BSE benchmark index Sensex on Tuesday rose by over 106 points in early trade on sustained buying by funds and retail investors amid a firming trend in Asian markets.

The 30-share index, which had gained 135.36 points in the previous session, rose further by 106.58 points, or 0.58 percent, to 18,396.31 points.

The wide-based Nifty of the National Stock Exchange moved up by 33.15 points, or 0.60 percent, to 5,597.45.

Brokers said continued buying by funds as well as retail investors, tracking a firming trend on the other Asian bourses influenced the trading sentiment here.

In Asia, Hong Kong's Hang Seng Index rose by 0.47 percent, while Japan's Nikkei was marginally down in morning trade on Tuesday.

The US markets remained closed on Monday for a holiday.