Security has been tightened around Israeli officials and institutions in India, ahead of the one-year anniversary of a terror attack against diplomatic targets in New Delhi.

The report comes days after a Washington institute published a paper claiming that Hezbollah and Iran, both suspected in the Delhi attack, were improving their ability to attack targets around the world.

Security officials for Israeli and Jewish interests in the city met with local police to discuss a possible Iranian attack on February 13, the date of last year’s bombing in which the wife of an Israeli diplomat was injured, the paper reported.

It is not clear if there is a specific threat of a new attack.

Israel’s security officials heard updates about the investigation into last year’s embassy attack, and requested that certain precautions be implemented around the diplomatic establishments. The New Delhi police agreed to beef up security around potential targets.

The investigation of last year’s bombing — itself part of a series of attempted attacks against Israeli targets around the world — pointed in the direction of Iranian suspects, who managed to escape India before being caught.

Local journalist Syed Mohammad Kazmi was arrested in connection with the attack, but was then granted bail and released. 

On Thursday, the prosecution filed a new charge sheet detailing Kazmi’s connection to the vehicles used to plant the bomb by the main suspects, as well as calls made from various cellphones, the Indian newspaper reported.

Last year, attacks against Israeli targets in Thailand, Georgia and Azerbaijan were thwarted. In July, five Israelis were killed in Bulgaria when a bomb blew up their tourist bus.

Israel has accused Hezbollah of acting as an Iranian proxy in carrying out some of the attacks.

While several of the attempts were botched, Iran’s elite Quds Force and Hezbollah terrorists have been learning from their mistakes and pose a growing threat to the US and other Western targets as well as Israel, Matthew Levitt of the Washington Institute for Near East Studies wrote earlier in the week.

Operating both independently and together, the groups are escalating their activities around the world, fueling worries that they increasingly have the ability and the willingness to attack the US and Israel, Levitt wrote in a new report.