Manchester Airport 'pipe bomb' suspect in court per BBC News but it's not terrorism

The last line of this BBC report http://www.bbc.co.uk/news/uk-england-manchester-38954293 has me puzzled:

'A man accused of having a pipe bomb in his hand luggage at Manchester Airport has appeared in court.

Nadeem Muhammed, 43, of Tinline Street, Bury, was stopped by security staff on 30 January.

He was questioned and then released by police, before his rearrest on Sunday.

The Pakistani national, charged with making or possessing an explosive under suspicious circumstances, was remanded in custody and is due to appear at Southwark Crown Court on 13 March.

Katie McCreath, defending, indicated that he would be plead not guilty to the charge at a future hearing.

Jessica Hart, prosecuting, said the case would not be proceeding under the terrorism protocol.'

He is alleged to have had a pipe bomb in his luggage. Other than terrorism what could the motive possibly have been?