Hmm…something tells me they ought to take another look at the unsolved murder of Brendan Mess and the two others….

Via Daily Mail:

Dead terror suspect Tamerlan Tsarnaev’s best friend had his ‘throat slit’ in an unsolved murder in 2011 as family members today told of how he was known to ‘manipulate and use’ his brother.

The older of the suspected marathon bombers was the black sheep of the family who ‘used his younger brother’ and had fallen out with an uncle he called on the eve of his death, relatives have said.

It has emerged the terror suspect’s best friend died in a gruesome unsolved murder two years ago, just after Tamerlan said he had ‘one single American friend’.

The 26-year-old, who appears to become increasingly radicalized over the last few years, was killed in a shoot-out with police on Thursday night.

Friends revealed that Tamerlan was changed by the murder of best friend Brendan Mess.

Two years ago Mess and two other men – Raphael Teken and Erik Weissman – were murdered on September 12, 2011.

Their bodies were found covered in marijuana in an apartment in Waltham, Massachusetts, and had their throats slit with a knife or ice pick.

Initially police said two other people had been there on the day and they were looking to question them although no one has ever been charged.

Wai Kru Mixed Martial Arts center owner John Allan said Tsarnaev and Mess used to work out at his gym together but Tsarnaev stopped coming after Mess was murdered.

The event clearly still haunted Tsarnaev as recently as last week when he suddenly returned to his old gym and started acting unusually.

The business owner who was traveling in Thailand at the time said he received an e-mail saying Tsarnaev had been in but acted rudely and disrespectfully to other gym-users.  

‘It was a clear indication that something was up,’ Allan told the Boston Globe. ‘He was becoming a complete [expletive].’

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