function bp_is_user_deleted( $user_id = 0 ) {

	// No user to check.
	if ( empty( $user_id ) ) {
		return false;
	}

	$bp = buddypress();

	// Assume user is not deleted.
	$is_deleted = false;

	// Setup our user.
	$user = false;

	// Get locally-cached data if available.
	switch ( $user_id ) {
		case bp_loggedin_user_id() :
			$user = ! empty( $bp->loggedin_user->userdata ) ? $bp->loggedin_user->userdata : false;
			break;

		case bp_displayed_user_id() :
			$user = ! empty( $bp->displayed_user->userdata ) ? $bp->displayed_user->userdata : false;
			break;
	}

	// Manually get userdata if still empty.
	if ( empty( $user ) ) {
		$user = get_userdata( $user_id );
	}

	// No user found.
	if ( empty( $user ) ) {
		$is_deleted = true;

	// User found.
	} else {

		// Check if deleted.
		if ( !empty( $user->deleted ) ) {
			$is_deleted = true;
		}

		if ( 2 == $user->user_status ) {
			$is_deleted = true;
		}
	}

	/**
	 * Filters whether a user is marked as deleted.
	 *
	 * @since 1.6.0
	 *
	 * @param bool $is_deleted Whether or not user is marked as deleted.
	 */
	return apply_filters( 'bp_is_user_deleted', (bool) $is_deleted );
}