Send SIGINT to a command launched inside bash script

I am executing a bash script and I want to correctly terminate a command (by pressing CTRL+C) that I am launching inside the script. This is the script: trap ctrl_c SIGINT function ctrl_c() { PID = $! kill -s SIGINT -$PID wait $PID echo "mycommand stopped!" } mycommand directory -option | grep --line-buffered -A 'Hello|Bye' >> output But it doesn't stop mycommand.