Multiple shell casings were found by police after reports of gunshots on Harvard Street near Davis and Portland street at around 8:47 p.m. Monday. At least two vehicles were seen fleeing the area, said Jeremy Warnick, director of communications and media relations for Cambridge police.

No victims or injuries were reported, though one building was struck by gunfire and officers were staying in the area to conduct a more comprehensive investigation, Warnick said.

It’s at least the fifth gunshot incident in The Port neighborhood since spring, including a May 2 incident at Harvard and Portland streets; a July 2 incident at 110 Harvard St.; one on Aug. 3 at Washington and Portland streets; and an Oct. 8 incident in which the glass door to an ATM was shattered by a bullet at Main and Portland streets.

People with information are asked to call Cambridge Police at (617) 349-3300. Anonymous reports can be left at (617) 349-3359, on the Cambridge Police MyPD mobile app; or sent by text message to 847411 (begin your text with TIP650, then type your message).