Police are investigating another suspicious package sent to MPs’ offices in Westminster, the fourth in recent days.
Offices were cordoned off as the latest package, understood to have been sent to the Labour MP Rupa Huq, was investigated by police. All other packages received so far were deemed not to be harmful.
It came 24 hours after two people were taken to hospital as a precaution when a package leaking a suspicious liquid was sent to the office of the Labour MP Mohammad Yasin.
Staff alerted police and paramedics, but the substance was found not to be hazardous.
All four packages have been found in the Norman Shaw north building in Westminster, which houses MPs’ offices and is linked by a walkway to Portcullis House.
A parliamentary spokesman confirmed four packages had been sent to the building in recent days and said police were investigating the latest package.
“This is further to the two items investigated yesterday, both of which were found to be non-harmful,” the spokesman said. “The police are investigating the content of the letters to identify any potential link.”
A Metropolitan police spokesman said: “Police were called at 9.49am on Tuesday 13 March to reports of a suspicious package at Norman Shaw Buildings, Victoria Embankment, Westminster. Specialist officers have been called and the package will be assessed.”
The spokesman said there were no reported injuries and inquiries were continuing.
Three police officers and five paramedics attended after Yasin’s staff reported the earlier package and a man and a woman were taken to hospital as a precaution.
“The substance contained in it was deemed not to be hazardous to health,” a Met police spokesman said on Monday. “The incident, which was contained to one room, has been stood down.”
Yasin won his Bedford seat from the Conservatives by 789 votes at the last general election. Huq, who said she was in a select committee meeting at the time of the incident, has been MP for Ealing Central and Acton since 2015.