tokyo oct 4 reuters  core consumer prices in tokyo a leading indicator of nationwide inflation rose 28 in september from a year earlier marking the biggest gain since 2014 in a sign of broadening cost pressures the core consumer price index cpi for japans capital which includes oil products but excludes fresh food prices matched a median market forecast and followed a 26 gain in august it was the fourth straight month the indexs rate of increase exceeded the bank of japans 2 target and matched a 28 gain hit in june 2014 prices rose for a wide range of goods and services including electricity bills chocolate sushi to hotel bills government data showed a sign more firms were passing on rising raw material costs to households the data is among key factors the boj will scrutinise in gauging whether recent costpush inflation could change into a sustained rise in prices driven by robust domestic demand the boj has pledged to keep monetary policy ultraloose despite recent rises in inflation which it sees as driven by temporary factors like higher fuel and raw material rather than strong consumption