Underage magic?

[Mecki]

Hi there,

Having spent the first 7 weeks post-HBP in a hospital with no 
computer within reach, I missed the whole "start of discussions". And 
though I certainly feel better, my husband will surely kill me if I 
tried to reread about a million threads before posting. so forgive 
me, if this has already been asked.

When Tom murdered his parents, he was supposed to have been 16 years 
old, right?
now, the ministry can detect underage magic, Harry has experienced 
that numerous times, then why was Morfin accused of the murder? I 
mean, I realise he confessed as soon as he was asked, but why did 
they suspect a grown man?

Did I miss something?

Mecki,
with 2 kids and now 2 angels
http://www.snugglepie.com/cb/4742.png
http://www.snugglepie.com/cb/4749.png