Sentinel House, on Waterloo Street, was targeted by activists who covered the front entrance of the building in graffiti and red paint in the early hours of Thursday morning.

It is understood that activists targeted the insurance firm Chubb’s offices over the firm’s alleged links to Israel, as they said in a statement after the incident that the firm provides insurance for UAV Engines, a subsidiary of Elbit Systems, Israel’s biggest weapons company.

Slogans including “Chubb insures genocide” were painted on the building, while several glass windows and doors were also smashed. 

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Activists say UAV Engines produces engines for Israel’s “huge killer drone” fleet at their site in Staffordshire, of which Elbit Systems is the main manufacturer.

One of the unnamed Glasgow activists said: “Civilians in Palestine, Lebanon and Iran continue to be killed by the US and Israel, and those who profit continue with impunity. Chubb provides Elbit and UAV Engines with Employer Liability Insurance, facilitating mass murder and raking in the profits.

“Our action today in Glasgow aims to disrupt Chubb Insurance’s operations, and expose their role in facilitating war crimes.

“Blood profiteers like Chubb are not welcome in our city. We will continue to target these companies until they drop their support for the Israeli death machine.”

It comes after activists similarly targeted Chubb’s London HQ, and its offices in Birmingham in February.

Protesters sprayed paint over the front of the buildings and locked themselves to its entrances in a bid to shut the company down.

In March, activists also scaled the building of Chubb’s Manchester office, covering the building in red paint.

On Thursday, a section of the pavement near the junction with Douglas Street in Glasgow was cordoned off with two police vehicles parked at the scene.

Officers were also reportedly seen investigating the smashed windows.

A Police Scotland spokesperson said: “Around 2.35am on Thursday April 16, officers received a report of damage to a building on Waterloo Street, Glasgow.

“Inquiries are ongoing.”