Her final text contained just a single word, but it haunts Jean Hanlon's (pictured) family to this day. 'Help', the message read.

Armed police officers are attending a scene at Central Middlesex Hospital in London following reports of a stabbing on site, with patients reporting that they are ‘hiding in safe rooms’.

A man has been arrested, the Metropolitan Police has confirmed adding that more information will follow. 

Metropolitan Police have confirmed to MailOnline that officers are at the scene, with one person being detained. 

One person at the hospital wrote on social media: ‘I am at Middlesex Central hospital in the dialysis unit and we’re sheltering in safe rooms. Armed policemen are on the scene, being described as a ‘major incident’.’ 

Emergency services rushed to the scene on Acton Lane, park Royal around 2pm this afternoon. Footage shows a number of police cars and ambulances 

London North West University Healthcare Tweeted: ‘There’s an ongoing incident at Central Middlesex Hospital. Please follow any instructions given to you by the police.’

The force has been contacted for further information. 

More follows.  

Armed police officers are attending a scene at Central Middlesex Hospital in London following reports of a stabbing on site

Armed police officers are attending a scene at Central Middlesex Hospital in London following reports of a stabbing on site

Armed police officers are attending a scene at Central Middlesex Hospital in London following reports of a stabbing on site

Police officers and ambulances arrived at the hospital around 2pm

Police officers and ambulances arrived at the hospital around 2pm

Police officers and ambulances arrived at the hospital around 2pm