The benchmark Sensex on Tuesday closed in the positive territory for the third straight day, but the day’s gain was limited to just 45 points after deadly terror attacks in Brussels sent markets globally into a tailspin. The closing was a fresh 11-week high of 25,330. The modest rise came on the back of investors sticking with their buying activity amid sustained foreign inflows. In a trade marked by choppiness, the 30-share barometer opened higher, but quickly slipped into the red zone after profit-booking in recent gainers kicked in. A decisively weak trend overseas after the explosions at the Brussels airport and a local metro station dragged the broader index further down.