SAN FRANCISCO (CBS SF/BCN) — An elderly man and woman were held at gunpoint during a home invasion in San Francisco’s Outer Richmond neighborhood on Tuesday morning, according to police.

San Francisco police detectives said the robbery was reported at 11:13 a.m. at a home in the 700 block of 40th Ave. Three suspects entered the home by force and one pointed a gun at an 81-year-old man and 79-year-old woman and demanded money.

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The suspects looked around the home, but then fled without taking anything.

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They were described as three men believed to be in their 20s and have not been arrested. Police have not released detailed descriptions of them.

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Anyone with information about the case is asked to call the San Francisco police tip line at (415) 575-4444 or to send a tip by text message to TIP411 with “SFPD” at the start of the message.