A promotional stunt by cable channel BET ended in a bomb scare Tuesday morning at a Los Angeles building, reports the Orange County Register.

The cable network apparently sent several beeping packages addressed to CBS Radio talent in a Wilshire Boulevard building, the story notes. After the mailroom found the suspicious packages, the building was evacuated by police at about 8:15 a.m. Police allowed people to re-enter the building at 10:45 a.m.

The packages apparently contained clocks counting down as a promotion for the cable network’s late-night talk show “Don’t Sleep with T.J. Holmes,” the story says. The CBS Radio stations in the building include KNX/1070 AM, KFWB/980 AM, KRTH/101 FM, KTWV/94.7 FM and KAMP/97.1 FM, according to the piece.