Canadian transportation firm Mullen Group said its second-quarter profit declined, primarily foreign exchange-rate accounting, though operating income rose 9%.

Canadian transportation firm Mullen Group’s first-quarter profit rose on higher demand at its oilfield services and trucking and logistics units.

Canadian transportation firm Mullen Group Thursday posted a third-quarter profit of C$28.4 million or 36 cents per share, compared with C$30.9 million, or 39 cents, a year ago.

Canadian transportation firm Mullen Group posted a second-quarter loss of C$6.2 million or 7 cents per share, compared with a profit of C$17.8 million, or 22 cents, a year ago.

Canadian transportation firm Mullen Group’s first-quarter net income fell to C$23.7 million or 29 cents per share, from C$31 million, or 38 cents, a year ago.