Indian intelligence agencies warned of impending attacks against Jews and Israelis in the south Asian country.
Indian media reported Monday that the decision had been made to increase security for the Israeli embassy and other potential targets.
Senior Israeli officials said the alert was not in light of a “concrete” threat and was routine.
A similar warning was issued ahead of the High Holidays in India in 2014.
However, Indian sources said that an al-Qaeda-linked threat was “imminent.”
The militants plan to target synagogues and Chabad centers ahead of the Jewish fast of Tisha B’Av, on July 25-26, sources told the Times of India.
Israeli-Indian relations have grown warmer since the election of Indian Prime Minister Narendra Modi, who is slated to visit Israel later this year.
Last year, a court sentenced a Sri Lankan man for planning attacks against Israeli targets in the Indian city of Bangalore.
In 2012, a bomb exploded next to the car of the Israeli military attache’s wife in New Delhi, injuring her and reigniting terrorism fears in the subcontinent.
A 2008 attack in Mumbai, which targeted luxury hotels, a Chabad center, a train station and other sites in the city, left 166 people dead, including a husband and wife running the city’s Chabad house and four Jewish tourists.