Tariq Masood was a character from the BBC

BBC

The British Broadcasting Corporation is a British public service broadcaster. Its headquarters is at Broadcasting House in the City of Westminster, London. It is the largest broadcaster in the world, with about 23,000 staff...

 television series Spooks

Spooks

Spooks is a British television drama series that originally aired on BBC One from 13 May 2002 – 23 October 2011, consisting of 10 series. The title is a popular colloquialism for spies, as the series follows the work of a group of MI5 officers based at the service's Thames House headquarters, in a...

, played by Shazad Latif

Shazad Latif

Shazad Latif, is a British actor, who starred in the BBC TV series Spooks as the highly skilled technician and data analyst for Section D, Tariq Masood from series 8 to his death in series 10.-Early life:...

. Masood was the technical wizard who replaced Malcolm Wynn-Jones

Malcolm Wynn-Jones

Malcolm Wynn-Jones was the fictional MI5 analyst, featured in the British television series Spooks, also known as MI5 in the United States. Malcolm was played by Hugh Simon from the start of Spooks in 2002 until the character was retired at the start of Series 8 in 2009...

 in Series 8. He joined Section D in 2007 when he was fast tracked through the system.

He had a cousin living in Lahore

Lahore

Lahore is the capital of the Pakistani province of Punjab and the second largest city in the country. With a rich and fabulous history dating back to over a thousand years ago, Lahore is no doubt Pakistan's cultural capital. One of the most densely populated cities in the world, Lahore remains a...

.

After finding an electronic bug in his broadband router and escaping his flat, Tariq was killed by a poison injection in Episode 2 of the Tenth Season. This was presumably by a similar system to the Bulgarian umbrella

Bulgarian umbrella

The Bulgarian umbrella is the name of an umbrella with a hidden pneumatic mechanism which shot out a small poisonous pellet containing ricin....

 referenced by Sasha Gavrik earlier in the same episode. In the real-life umbrella assassination, a ricin

Ricin

Ricin , from the castor oil plant Ricinus communis, is a highly toxic, naturally occurring protein. A dose as small as a few grains of salt can kill an adult. The LD50 of ricin is around 22 micrograms per kilogram Ricin , from the castor oil plant Ricinus communis, is a highly toxic, naturally...

 pellet was fired into the victim (Georgi Markov

Georgi Markov

Georgi Ivanov Markov was a Bulgarian dissident writer.Markov originally worked as a novelist and playwright, but in 1969 he defected from Bulgaria, then governed by President Todor Zhivkov...

). This method of delivery - and subsequent medical symptoms - bears a striking resemblance to Tariq's murder.