(Reuters) -Zions Bancorp reported a rise in third-quarter profit on Monday, helped by stronger income from interest, despite taking a hefty loss on two loans, sending shares of the bank up 2.5% in after-market trading.

Zions disclosed last week that it would take a $50 million loss in the third quarter on two commercial and industrial loans from its California division. 

The statement from the bank, combined with separate disclosures from Western Alliance and Jefferies about a fraud lawsuit involving Cantor Group V and exposure to bankrupt auto parts maker First Brands, respectively, led to a decline in banks' shares on Friday as investor concerns over lending intensified.

"Excluding this loss, remaining net charge-offs were very benign at $6 million, or 4 basis points of average loans on an annualized basis," CEO Harris Simmons said in a statement.

However, a broader loan growth has helped banks rake in more from interest income.

Net interest income - the difference between what banks earn on loans and pay on deposits - rose to $672 million from $620 million in the year-ago quarter.

Net income applicable to the bank's shareholders came in at $221 million, or $1.48 per share, in the three months ended September 30, compared with $204 million, or $1.37 per share, a year earlier.