the same ministry; the said ministry
Used in formal or journalistic contexts to refer back to a ministry previously mentioned. Often appears in news articles and official documents.
同省は来年度の予算案を発表した。
The ministry announced its budget proposal for the next fiscal year.
この問題について、同省はコメントを控えている。
The ministry has refrained from commenting on this issue.
According to the ministry, a new system will start from next fiscal year.
The ministry announced a new regulatory proposal.
同局 is the back-reference word for a bureau or station, whereas 同省 is used instead when referring back to a government ministry.
同社 refers back to 'the same company' whereas 同省 refers back to 'the same ministry', so the two are easy to mix up in news writing.
同局 refers back to 'the same bureau/station' while 同省 refers back to 'the same ministry', so context is needed to tell them apart.
Compound of 同 (どう, 'same') and 省 (しょう, 'ministry'). A standard Sino-Japanese formation used in formal reference.