The jailing of ex-MP Denis MacShane for making bogus expense claims was "not justice", said his former Labour colleague Tom Harris.
The former transport minister tweeted that it was an "awful day":
Harris also made a reference to Liberal Democrat David Laws, who has been appointed a minister despite revelations that he claimed allowances to pay his partner rent for the London flat where they lived.
If only @denismacshane had claimed he was only only trying to cover up his sexuality, he'd be back on the front bench by now.
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Marjorie and Michael Cawdery, both 83, are understood to have been stabbed to death in a killing their family called "incomprehensible".
Detectives have launched a murder investigation following the shooting in Brent, north west London on Friday night.
Hot and humid throughout the Bank Holiday Weekend.