Newspapers are not peer-reviewed sources. You will need to be mindful of the requirements of your assignment before you choose to cite information that you have read in a newspaper article.
This point aside, newspapers can serve as an important discovery tool. They may name key individuals or community groups, identify the titles of reports, provide information about intiatives or programs, and shed light on other documents and "grey literature" materials that may exist on your topic. Once you have uncovered such information, it may then allow you to track down additional materials that are relevant to your topic.
Depending on the newspaper, access may be online or on paper (or even on microfilm depending on the title).