Real estate loans now make up almost 50 percent of its problem assets.
Commercial real estate loans grew nearly 90 percent in the same period.
Both banks have been hurt by bad energy and real estate loans.
It lost $2.2 billion in the first half of the year, mainly from writing off bad real estate loans.
Bank capital was drained in 1990 because of bad real estate loans.
Bank of Boston is also suffering from poor real estate loans.
He made commercial and real estate loans throughout a wide area around the town.
Also, problems with bad real estate loans are expected to drag on for several years.
About $56 million of the increase was to cover commercial real estate loans.
American real estate loans that are not paying interest rose $119 million, to $1.3 billion.